/* roulang page: index */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --line-soft:rgba(124,231,255,.08);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45), 0 10px 30px -10px rgba(22,227,180,.55);
  --t:all .18s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:var(--t);}
a:hover{color:var(--brand-2);}
button,input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:650;line-height:1.28;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1400px){ .container{max-width:1280px;} }
@media (max-width:575.98px){ .container{padding-left:16px;padding-right:16px;} }

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1080;
  background:rgba(7,16,24,.72);
  border-bottom:1px solid transparent;
  transition:var(--t);
}
.site-header.is-scrolled{
  background:rgba(7,16,24,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:6px;
  flex-shrink:0;
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-mark{color:var(--text-1);}
.brand-tail{
  color:var(--brand);
  background:rgba(22,227,180,.10);
  border:1px solid rgba(22,227,180,.32);
  border-radius:999px;
  padding:1px 9px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.6;
}
.brand:hover .brand-tail{background:rgba(22,227,180,.18);color:var(--brand);}

.main-nav{display:flex;align-items:center;gap:6px;flex:1;}
.main-nav .nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
}
.main-nav .nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transition:var(--t);
}
.main-nav .nav-link:hover{color:var(--text-1);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--text-1);font-weight:600;}
.main-nav .nav-link.active::after{transform:scaleX(1);}

.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}

/* buttons */
.btn-brand,.btn-ghost,.btn-soft{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  padding:12px 22px;
  min-height:44px;
  border:1px solid transparent;
  cursor:pointer;
  transition:var(--t);
  line-height:1.2;
}
.btn-brand{
  background:var(--brand);
  color:#04140F;
  box-shadow:var(--sh-glow);
}
.btn-brand:hover{
  background:#25f0c1;
  color:#04140F;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(22,227,180,.55),0 16px 40px -12px rgba(22,227,180,.7);
}
.btn-brand:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{
  background:transparent;
  border-color:rgba(124,231,255,.35);
  color:var(--text-1);
}
.btn-ghost:hover{
  border-color:var(--brand);
  background:rgba(22,227,180,.08);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-soft{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text-2);
}
.btn-soft:hover{color:var(--text-1);border-color:var(--brand-2);background:rgba(124,231,255,.08);}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px;border-radius:10px;}
.btn-pill{border-radius:999px;}

/* mega dropdown */
.mega-dropdown{position:static;}
.mega-menu{
  border:1px solid var(--line);
  background:rgba(14,27,38,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:0;
  width:820px;
  max-width:calc(100vw - 48px);
  margin-top:14px !important;
  overflow:hidden;
  animation:megaIn .16s ease;
}
@keyframes megaIn{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}
.mega-grid{
  display:grid;
  grid-template-columns:1fr 1fr 240px;
  gap:0;
}
.mega-col{padding:24px 22px;}
.mega-col + .mega-col{border-left:1px solid var(--line-soft);}
.mega-col h4{
  font-size:12px;
  letter-spacing:.10em;
  color:var(--brand);
  margin-bottom:14px;
  font-weight:600;
}
.mega-col a{
  display:block;
  padding:8px 10px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--text-2);
}
.mega-col a:hover{background:rgba(22,227,180,.08);color:var(--text-1);}
.mega-col .meta{display:block;font-size:12px;color:var(--text-3);margin-top:2px;}
.mega-entry{
  padding:24px 22px;
  border-left:1px solid var(--line-soft);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.mega-entry img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:12px;
  border:1px solid var(--line);
}
.mega-entry .t{font-size:14px;font-weight:600;color:var(--text-1);line-height:1.5;}
.mega-entry .d{font-size:12.5px;color:var(--text-3);}
.mega-entry .link{font-size:13px;color:var(--brand-2);font-weight:600;}

/* mobile nav */
.burger{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-xs);
  color:var(--text-1);
  font-size:17px;
  cursor:pointer;
  transition:var(--t);
}
.burger:hover{border-color:var(--brand);color:var(--brand);}
.mobile-panel{
  border-top:1px solid var(--line);
  background:rgba(9,19,28,.98);
  backdrop-filter:blur(14px);
  padding:14px 0 22px;
}
.mobile-panel .m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 12px;
  font-size:15.5px;
  color:var(--text-2);
  border-radius:var(--r-xs);
  border-bottom:1px solid var(--line-soft);
}
.mobile-panel .m-link:last-of-type{border-bottom:none;}
.mobile-panel .m-link.active,
.mobile-panel .m-link:hover{color:var(--brand);background:rgba(22,227,180,.06);}
.mobile-panel .m-cta{margin-top:16px;width:100%;}

/* ============ hero ============ */
.hero{
  position:relative;
  padding:88px 0 96px;
  overflow:hidden;
  isolation:isolate;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.26;
  z-index:-2;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,16,24,.42) 0%,rgba(7,16,24,.80) 58%,var(--bg-base) 100%);
  z-index:-1;
}
.hero-arc{
  position:absolute;
  left:50%;
  bottom:-300px;
  width:1240px;
  height:560px;
  transform:translateX(-50%);
  border:1px solid rgba(124,231,255,.09);
  border-radius:50%;
  pointer-events:none;
  z-index:0;
}
.hero-arc.two{
  width:900px;height:400px;bottom:-226px;
  border-color:rgba(124,231,255,.06);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(22,227,180,.10);
  border:1px solid rgba(22,227,180,.30);
  border-radius:999px;
  padding:6px 14px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  margin:22px 0 20px;
  letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:560px;
  line-height:1.85;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  margin-top:34px;
}
.trust-bar span{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--text-2);
  padding:0 16px;
  border-left:1px solid var(--line);
}
.trust-bar span:first-child{padding-left:0;border-left:none;}
.trust-bar i{color:var(--brand-2);font-size:12px;}

/* demo card */
.demo-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  padding:26px;
  overflow:hidden;
}
.demo-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  opacity:.7;
}
.demo-head{display:flex;align-items:center;justify-content:space-between;gap:14px;}
.demo-title{font-size:15px;color:var(--text-2);}
.tier-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--accent);
  background:rgba(255,176,32,.12);
  border:1px solid rgba(255,176,32,.42);
  border-radius:999px;
  padding:4px 12px;
}
.demo-score{
  margin:22px 0 6px;
  display:flex;
  align-items:baseline;
  gap:10px;
}
.demo-score b{
  font-size:52px;
  line-height:1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.03em;
  font-weight:700;
  color:var(--text-1);
}
.demo-score small{font-size:13px;color:var(--text-3);}
.bar{
  height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.bar > i{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.demo-list{margin-top:22px;display:flex;flex-direction:column;}
.demo-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14.5px;
  color:var(--text-2);
}
.demo-list li:last-child{border-bottom:none;}
.demo-list li strong{color:var(--text-1);font-weight:600;font-variant-numeric:tabular-nums;}
.demo-foot{
  margin-top:18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--text-3);
}

/* ============ section shell ============ */
.section{padding:88px 0;}
.section.tight{padding:72px 0;}
.sec-head{margin-bottom:44px;max-width:760px;}
.sec-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.10em;
  font-weight:600;
  color:var(--brand);
  margin-bottom:12px;
}
.sec-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px;}
.sec-head p{color:var(--text-2);font-size:15.5px;}
.sec-head.split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}
.sec-head.split .txt{max-width:660px;}
.more-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-2);
  white-space:nowrap;
}
.more-link:hover{gap:12px;color:var(--brand);}

/* ============ compare table ============ */
.cmp-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
}
.cmp-scroll{overflow-x:auto;}
.cmp-table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px;}
.cmp-table th,.cmp-table td{
  padding:18px 22px;
  text-align:left;
  font-size:15px;
  border-bottom:1px solid var(--line-soft);
  vertical-align:middle;
}
.cmp-table thead th{
  font-size:12.5px;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--text-2);
  background:rgba(9,20,29,.96);
  position:sticky;
  top:72px;
  z-index:3;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.cmp-table tbody tr{height:56px;transition:var(--t);}
.cmp-table tbody tr:hover{background:rgba(124,231,255,.04);}
.cmp-table tbody tr:last-child td{border-bottom:none;}
.cmp-table td:first-child{color:var(--text-1);font-weight:600;}
.col-hi{
  background:rgba(22,227,180,.055);
  position:relative;
}
thead th.col-hi{color:var(--brand);}
thead th.col-hi::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:2px;
  background:var(--brand);
}
.rec-tag{
  display:inline-block;
  margin-left:8px;
  font-size:11px;
  font-weight:600;
  color:#04140F;
  background:var(--brand);
  border-radius:999px;
  padding:2px 8px;
  letter-spacing:.04em;
  vertical-align:middle;
}
.mark{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--text-2);}
.mark b{color:var(--text-1);font-weight:650;font-variant-numeric:tabular-nums;}
.mark.yes i{color:var(--accent);}
.mark.no i{color:var(--danger);}
.cmp-note{
  padding:16px 22px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line-soft);
}

/* ============ tier highlight ============ */
.tier-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.tier-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:26px;
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.08);
  transition:var(--t);
  display:flex;
  flex-direction:column;
}
.tier-card:nth-child(1){margin-top:26px;}
.tier-card:nth-child(2){padding-top:34px;padding-bottom:34px;}
.tier-card:hover{
  transform:translateY(-4px);
  border-color:rgba(22,227,180,.40);
  box-shadow:var(--sh-glow);
}
.tier-no{
  font-size:44px;
  line-height:1;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.03em;
  color:rgba(124,231,255,.28);
  margin-bottom:14px;
}
.tier-card.is-feature .tier-no{color:var(--brand);}
.tier-name{font-size:20px;margin-bottom:6px;}
.tier-desc{font-size:13.5px;color:var(--text-3);margin-bottom:18px;}
.tier-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px;flex:1;}
.tier-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.65;}
.tier-list i{color:var(--brand);font-size:12px;margin-top:7px;}
.tier-bar{margin-bottom:16px;}
.tier-bar .bar{margin-top:8px;}
.tier-bar span{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.tier-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-2);
}
.tier-link:hover{gap:12px;color:var(--brand);}

/* ============ content preview ============ */
.prev-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.prev-card{
  position:relative;
  display:block;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:var(--t);
  box-shadow:var(--sh-1);
}
.prev-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.36);box-shadow:var(--sh-glow);}
.prev-w6{grid-column:span 6;}
.prev-w4{grid-column:span 4;}
.prev-card .thumb{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--bg-elev);
}
.prev-card.ratio43 .thumb{aspect-ratio:4/3;}
.prev-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.prev-card:hover .thumb img{transform:scale(1.05);}
.prev-card .thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,16,24,.05),rgba(7,16,24,.55));
}
.lock-tag{
  position:absolute;
  top:12px;right:12px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:11.5px;
  font-weight:600;
  color:var(--accent);
  background:rgba(9,20,29,.78);
  border:1px solid rgba(255,176,32,.42);
  border-radius:999px;
  padding:3px 10px;
  backdrop-filter:blur(6px);
}
.prev-body{padding:20px 22px 24px;}
.prev-body .tag{
  display:inline-block;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-2);
  background:rgba(124,231,255,.10);
  border:1px solid rgba(124,231,255,.30);
  border-radius:999px;
  padding:3px 10px;
  margin-bottom:12px;
}
.prev-body h3{font-size:17.5px;margin-bottom:8px;line-height:1.45;}
.prev-body p{font-size:14px;color:var(--text-2);line-height:1.75;}
.prev-card.is-wide .prev-body h3{font-size:19.5px;}

/* ============ stats ============ */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.stat-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(14px);
  padding:24px;
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.08);
  transition:var(--t);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.34);}
.stat-card b{
  display:block;
  font-size:40px;
  line-height:1.1;
  font-weight:700;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
  color:var(--brand);
}
.stat-card span{display:block;font-size:13.5px;color:var(--text-3);margin-top:8px;}

/* ============ cms feed ============ */
.feed-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.feed-tabs .ft{
  font-size:13.5px;
  font-weight:600;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 16px;
  transition:var(--t);
}
.feed-tabs .ft:hover{color:var(--text-1);border-color:var(--brand-2);}
.feed-tabs .ft.active{color:#04140F;background:var(--brand);border-color:var(--brand);}
.feed-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.feed-card{
  display:flex;
  gap:18px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(14px);
  padding:16px;
  box-shadow:var(--sh-1);
  transition:var(--t);
}
.feed-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.36);box-shadow:var(--sh-glow);}
.feed-thumb{
  flex:0 0 168px;
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--bg-elev);
  border:1px solid var(--line-soft);
}
.feed-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.feed-card:hover .feed-thumb img{transform:scale(1.05);}
.feed-main{flex:1;min-width:0;display:flex;flex-direction:column;}
.feed-main h3{
  font-size:16.5px;
  line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.feed-main p{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:12px;
  flex:1;
}
.feed-meta{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:12.5px;
  color:var(--text-3);
  padding-top:10px;
  border-top:1px dashed var(--line-soft);
}
.feed-meta .cat{
  color:var(--brand-2);
  background:rgba(124,231,255,.10);
  border:1px solid rgba(124,231,255,.28);
  border-radius:999px;
  padding:1px 10px;
  font-size:11.5px;
}
.feed-meta time{margin-left:auto;font-variant-numeric:tabular-nums;}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:28px;color:var(--text-3);margin-bottom:14px;display:block;}
.empty-state p{font-size:14.5px;color:var(--text-2);margin-bottom:16px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-item{
  border-bottom:1px solid var(--line);
  background:transparent;
}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding:20px 4px;
  background:none;
  border:none;
  color:var(--text-1);
  font-size:16.5px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:var(--t);
}
.faq-btn:hover{color:var(--brand-2);}
.faq-btn .plus{
  flex:0 0 auto;
  width:26px;height:26px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line);
  transition:var(--t);
}
.faq-btn .plus::before,
.faq-btn .plus::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--brand);
  transform:translate(-50%,-50%);
  transition:var(--t);
}
.faq-btn .plus::before{width:12px;height:1.5px;}
.faq-btn .plus::after{width:1.5px;height:12px;}
.faq-btn[aria-expanded="true"]{color:var(--brand);}
.faq-btn[aria-expanded="true"] .plus{
  border-color:rgba(22,227,180,.5);
  transform:rotate(45deg);
  background:rgba(22,227,180,.10);
}
.faq-body{
  max-width:720px;
  padding:0 4px 24px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ============ CTA ============ */
.cta-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  overflow:hidden;
  isolation:isolate;
  padding:56px 48px;
  background:rgba(14,27,38,.6);
  box-shadow:var(--sh-2);
}
.cta-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:url(/assets/images/backpic/back-3.webp) center/cover no-repeat;
  opacity:.22;
  z-index:-2;
}
.cta-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(7,16,24,.90),rgba(7,16,24,.78));
  z-index:-1;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.cta-inner p{font-size:14.5px;color:var(--text-2);max-width:520px;}
.cta-form{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  align-items:flex-start;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13.5px;color:var(--text-2);font-weight:500;}
.field input{
  width:280px;
  height:48px;
  background:var(--bg-elev);
  border:1px solid var(--line);
  border-radius:var(--r-xs);
  color:var(--text-1);
  padding:0 16px;
  font-size:15px;
  transition:var(--t);
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(22,227,180,.18);
}
.cta-note{
  margin-top:18px;
  font-size:12.5px;
  color:var(--text-3);
}

/* ============ footer ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 0;
  margin-top:0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.foot-brand .brand{font-size:19px;margin-bottom:16px;}
.foot-brand p{font-size:13.5px;color:var(--text-3);max-width:300px;line-height:1.85;}
.foot-col h5{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-1);
  margin-bottom:16px;
  font-weight:600;
}
.foot-col a,.foot-col span{
  display:block;
  font-size:13.5px;
  color:var(--text-3);
  padding:6px 0;
}
.foot-col a:hover{color:var(--brand-2);}
.foot-bottom{
  border-top:1px solid var(--line-soft);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ============ responsive ============ */
@media (max-width:1199.98px){
  .hero-inner{gap:40px;}
  .mega-menu{width:720px;}
  .mega-grid{grid-template-columns:1fr 1fr;}
  .mega-entry{display:none;}
}
@media (max-width:991.98px){
  .nav-wrap{height:64px;gap:16px;}
  .hero{padding:64px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-sub{max-width:none;}
  .section{padding:64px 0;}
  .section.tight{padding:56px 0;}
  .sec-head{margin-bottom:34px;}
  .tier-grid{grid-template-columns:1fr;gap:18px;}
  .tier-card:nth-child(1){margin-top:0;}
  .tier-card:nth-child(2){padding-top:26px;padding-bottom:26px;}
  .prev-w6,.prev-w4{grid-column:span 12;}
  .prev-card.ratio43 .thumb{aspect-ratio:16/9;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .feed-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-card{padding:40px 28px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .hero{padding:48px 0 60px;}
  .hero h1{margin:18px 0 16px;}
  .hero-cta{gap:12px;}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{flex:1 1 auto;min-width:150px;}
  .trust-bar{gap:10px;}
  .trust-bar span{padding:0 12px;font-size:13px;}
  .demo-card{padding:20px;}
  .demo-score b{font-size:42px;}
  .section{padding:56px 0;}
  .tab-cmp .cmp-scroll{overflow:visible;}
  .cmp-table{display:block;min-width:0;}
  .cmp-table thead{display:none;}
  .cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%;}
  .cmp-table tr{
    border:1px solid var(--line);
    border-radius:var(--r-md);
    background:rgba(255,255,255,.03);
    margin-bottom:14px;
    padding:6px 0;
    height:auto;
  }
  .cmp-table tr:hover{background:rgba(255,255,255,.05);}
  .cmp-table td{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    padding:12px 16px;
    border-bottom:1px dashed var(--line-soft);
    font-size:14.5px;
  }
  .cmp-table tr td:last-child{border-bottom:none;}
  .cmp-table td::before{
    content:attr(data-label);
    font-size:12.5px;
    color:var(--text-3);
    letter-spacing:.04em;
    flex:0 0 auto;
  }
  .cmp-table td:first-child{
    background:rgba(22,227,180,.07);
    font-weight:650;
    border-bottom:1px solid var(--line-soft);
  }
  .cmp-table td:first-child::before{content:"";}
  .col-hi{background:rgba(22,227,180,.05);}
  .cmp-note{font-size:12.5px;padding:14px 16px;}
  .feed-card{flex-direction:column;gap:14px;}
  .feed-thumb{flex:none;width:100%;aspect-ratio:16/9;}
  .stat-card b{font-size:32px;}
  .faq-btn{font-size:15.5px;min-height:52px;}
  .cta-form{width:100%;}
  .field{width:100%;}
  .field input{width:100%;}
  .cta-form .btn-brand{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:8px;}
  .foot-col{padding-top:20px;border-top:1px solid var(--line-soft);}
  .foot-brand{border-top:none;padding-top:0;}
  .foot-bottom{font-size:12.5px;}
}
@media (max-width:575.98px){
  .stat-grid{grid-template-columns:1fr;}
  .sec-head.split{flex-direction:column;align-items:flex-start;}
  .trust-bar span{padding:0 10px;font-size:12.5px;}
  .trust-bar span:first-child{padding-left:0;}
  .demo-score b{font-size:36px;}
}

/* roulang page: article */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-btn:12px;
  --r-in:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45), 0 10px 30px -10px rgba(22,227,180,.55);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:all .18s ease}
button,input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:650;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;box-shadow:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:-.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,16,24,.86);
  border-bottom:1px solid transparent;
  transition:all .18s ease;
}
.site-header.is-stuck{
  background:rgba(7,16,24,.78);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  min-height:72px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:baseline;gap:6px;flex-shrink:0}
.brand-mark{
  font-size:21px;font-weight:700;letter-spacing:.02em;
  color:var(--text-1);
}
.brand-tail{
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--brand);
  border:1px solid rgba(22,227,180,.42);
  border-radius:var(--r-pill);
  padding:2px 9px;
  background:rgba(22,227,180,.08);
  transform:translateY(-2px);
}
.brand:hover .brand-mark{color:var(--brand-2)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav .nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-radius:var(--r-btn);
  white-space:nowrap;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .18s ease;
}
.main-nav .nav-link:hover{color:var(--text-1)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--text-1);font-weight:600}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}

/* mega */
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:7px;
  background:transparent;border:1px solid var(--line);
  color:var(--text-2);font-size:15px;font-weight:500;
  padding:9px 14px;border-radius:var(--r-btn);cursor:pointer;
  transition:all .18s ease;
}
.mega-trigger:hover{color:var(--text-1);border-color:rgba(124,231,255,.4)}
.mega-trigger i{font-size:11px;transition:transform .18s ease}
.mega-wrap:hover .mega-trigger i,.mega-wrap:focus-within .mega-trigger i{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:800px;
  padding:22px;
  display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:22px;
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .12s ease,transform .12s ease,visibility .12s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h6{
  font-size:12px;letter-spacing:.1em;color:var(--brand);
  font-weight:600;margin-bottom:12px;
}
.mega-col a{
  display:block;font-size:14px;color:var(--text-2);
  padding:7px 0;border-bottom:1px solid rgba(124,231,255,.08);
}
.mega-col a:hover{color:var(--brand-2);padding-left:4px}
.mega-post .mp-title{display:block;font-size:14px;color:var(--text-2);line-height:1.55}
.mega-post .mp-time{
  display:block;font-size:12px;color:var(--text-3);
  font-variant-numeric:tabular-nums;margin-top:2px;
}
.mega-card{
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;background:var(--glass);
  transition:all .18s ease;
}
.mega-card:hover{border-color:rgba(22,227,180,.4);transform:translateY(-4px)}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.86}
.mega-card span{display:block;padding:11px 13px;font-size:13px;color:var(--text-2)}

/* buttons */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;transition:all .18s ease;border:1px solid transparent;
}
.btn-glow{background:var(--brand);color:#04140F;box-shadow:var(--sh-glow)}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--sh-glow),0 16px 36px -12px rgba(22,227,180,.7);color:#04140F}
.btn-glow:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;border-color:rgba(124,231,255,.35);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(22,227,180,.08);color:var(--text-1)}
.btn-ghost:active{background:rgba(22,227,180,.14)}
.btn-glow.sm,.btn-ghost.sm{min-height:42px;padding:0 18px;font-size:14px}
.btn-glow[disabled],.btn-glow.is-disabled{filter:saturate(.4);cursor:not-allowed;box-shadow:none}

.nav-toggle{
  width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:transparent;color:var(--text-1);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* offcanvas mobile nav */
.mnav{background:var(--bg-soft)!important;border-left:1px solid var(--line)!important;color:var(--text-1);width:320px}
.mnav .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px}
.mnav-title{font-size:15px;font-weight:600;color:var(--text-1)}
.mnav-close{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:transparent;color:var(--text-2);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
}
.mnav-close:hover{color:var(--brand);border-color:var(--brand)}
.mnav .offcanvas-body{padding:16px 20px 28px}
.mnav-link{
  display:block;padding:13px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(124,231,255,.1);
}
.mnav-link:hover,.mnav-link.active{color:var(--brand)}
.mnav-more{margin:18px 0 22px;border:1px solid var(--line);border-radius:var(--r-md);padding:12px 14px;background:var(--glass)}
.mnav-more summary{
  cursor:pointer;font-size:14px;font-weight:600;color:var(--brand-2);list-style:none;
  display:flex;align-items:center;justify-content:space-between;
}
.mnav-more summary::-webkit-details-marker{display:none}
.mnav-more[open] summary{margin-bottom:8px}
.mnav-more a{display:block;font-size:14px;color:var(--text-2);padding:8px 0}
.mnav-more a:hover{color:var(--brand)}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:56px 0 44px;
  background-image:linear-gradient(180deg,rgba(7,16,24,.72) 0%,rgba(7,16,24,.93) 62%,var(--bg-base) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.arena-lines{position:absolute;inset:0;pointer-events:none;overflow:hidden;opacity:.1}
.arena-lines::before{
  content:"";position:absolute;left:50%;top:80px;width:1500px;height:1500px;margin-left:-750px;
  border:1px solid var(--brand-2);border-radius:50%;
}
.arena-lines::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--brand-2);
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:18px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:rgba(124,231,255,.3)}
.crumb .cur{color:var(--text-1)}
.page-head h1{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.3;
  max-width:960px;
  margin-bottom:18px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13.5px;color:var(--text-3);
}
.post-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.post-meta .meta-item i{color:var(--brand-2);opacity:.8}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-2);background:rgba(124,231,255,.12);
  border:1px solid rgba(124,231,255,.4);
}

/* ---------- glass card base ---------- */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
}
.glass::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:1px;
  background:rgba(255,255,255,.08);pointer-events:none;
}

/* ---------- article layout ---------- */
.section{padding:88px 0}
.section-sm{padding:56px 0}
.article-wrap{padding:56px 0 88px}
.post-card{padding:28px 28px 34px}
@media (max-width:767px){.post-card{padding:20px 18px 26px}}
.post-hero{margin:0 0 26px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}
.post-hero img{width:100%;aspect-ratio:16/9;object-fit:cover}

.post-body{max-width:800px;font-size:16px;line-height:1.9;color:var(--text-2)}
.post-body>*+*{margin-top:20px}
.post-body p{margin:0;line-height:1.9}
.post-body h2{
  font-size:clamp(21px,2.2vw,26px);color:var(--text-1);
  margin-top:40px;padding-left:14px;position:relative;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:3px;background:var(--brand);
}
.post-body h3{font-size:19px;color:var(--text-1);margin-top:28px}
.post-body strong{color:var(--text-1);font-weight:600}
.post-body a{color:var(--brand-2);border-bottom:1px solid rgba(124,231,255,.35)}
.post-body a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.post-body ul,.post-body ol{padding-left:0}
.post-body ul li,.post-body ol li{
  position:relative;padding-left:22px;line-height:1.65;margin-top:10px;color:var(--text-2);
}
.post-body ul li::before{
  content:"";position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);
}
.post-body ol{counter-reset:olnum}
.post-body ol li{counter-increment:olnum}
.post-body ol li::before{
  content:counter(olnum);position:absolute;left:0;top:2px;
  font-size:13px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;
}
.post-body blockquote{
  margin:26px 0;padding:18px 20px;
  border-left:3px solid var(--brand);
  background:rgba(255,255,255,.03);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-style:normal;
}
.post-body table{
  width:100%;border-collapse:collapse;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
}
.post-body th,.post-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.post-body th{background:rgba(255,255,255,.04);color:var(--text-1);font-weight:600}
.post-body tr:last-child td{border-bottom:none}
.post-body img{border-radius:var(--r-md);border:1px solid var(--line);width:100%;height:auto}
.post-body code{
  font-size:14px;padding:2px 7px;border-radius:6px;
  background:rgba(22,227,180,.1);color:var(--brand-2);
}
@media (max-width:767px){
  .post-body{max-width:100%;font-size:16px}
}

.post-empty{
  text-align:center;padding:48px 20px;
  border:1px dashed var(--line);border-radius:var(--r-md);
  background:rgba(255,255,255,.02);
}
.post-empty i{font-size:30px;color:var(--brand-2);opacity:.85}
.post-empty p{font-size:19px;font-weight:600;color:var(--text-1);margin:14px 0 6px}
.post-empty span{display:block;font-size:14px;color:var(--text-3);margin-bottom:22px}

/* tags */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;
  border-radius:var(--r-pill);font-size:13px;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.tag:hover{color:var(--brand);border-color:rgba(22,227,180,.45);transform:translateY(-2px)}

/* pager cards */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.pager-card{
  padding:20px 22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:all .18s ease;
}
.pager-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.4);box-shadow:var(--sh-2)}
.pager-card .dir{
  display:flex;align-items:center;gap:8px;font-size:12.5px;
  letter-spacing:.08em;color:var(--brand);margin-bottom:8px;font-weight:600;
}
.pager-card h4{font-size:16px;color:var(--text-1);line-height:1.55}
.pager-card p{font-size:13.5px;color:var(--text-3);margin-top:6px}
@media (max-width:767px){.pager{grid-template-columns:1fr}}

/* sidebar */
.side-sticky{position:sticky;top:96px;display:grid;gap:20px}
.side-card{padding:22px}
.side-card h3{font-size:15px;color:var(--text-1);margin-bottom:14px;display:flex;align-items:center;gap:9px}
.side-card h3 i{color:var(--brand);font-size:13px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--text-2);padding:10px 0;
  border-bottom:1px solid rgba(124,231,255,.08);
}
.side-list a:last-child{border-bottom:none}
.side-list a:hover{color:var(--brand)}
.side-list a i{font-size:11px;color:var(--text-3)}
.side-list a:hover i{color:var(--brand);transform:translateX(3px)}
.side-note{font-size:13px;color:var(--text-3);line-height:1.75;margin-top:12px}
.side-reco{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid rgba(124,231,255,.08)}
.side-reco:last-of-type{border-bottom:none}
.side-reco img{width:76px;height:56px;object-fit:cover;border-radius:10px;border:1px solid var(--line);flex-shrink:0}
.side-reco span{font-size:13.5px;color:var(--text-2);line-height:1.6}
.side-reco:hover span{color:var(--text-1)}
@media (max-width:991px){.side-sticky{position:static;margin-top:28px}}

/* section title */
.sec-head{margin-bottom:38px;max-width:760px}
.sec-tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.1em;
  color:var(--brand);margin-bottom:12px;
}
.sec-head h2{font-size:clamp(24px,3vw,34px);color:var(--text-1);margin-bottom:12px}
.sec-head p{font-size:15px;color:var(--text-2);max-width:640px}

/* related grid */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  border-radius:var(--r-md);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:all .18s ease;display:flex;flex-direction:column;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.4);box-shadow:var(--sh-2)}
.rel-thumb{position:relative;overflow:hidden}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.06)}
.rel-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,16,24,.05),rgba(7,16,24,.45));
}
.lock-badge{
  position:absolute;top:12px;right:12px;z-index:2;
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:11.5px;font-weight:600;
  color:var(--accent);background:rgba(255,176,32,.12);
  border:1px solid rgba(255,176,32,.45);
}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;color:var(--text-1);line-height:1.5}
.rel-body p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.rel-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;
  padding-top:12px;border-top:1px solid rgba(124,231,255,.1);
}
.rel-foot .cat{color:var(--brand-2)}
@media (max-width:991px){.rel-grid{grid-template-columns:1fr 1fr}}
@media (max-width:767px){.rel-grid{grid-template-columns:1fr}}

/* FAQ */
.faq{padding:0;overflow:hidden}
.faq .accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line)}
.faq .accordion-item:last-child{border-bottom:none}
.faq .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:16px;font-weight:600;
  min-height:56px;padding:18px 60px 18px 24px;
  box-shadow:none;border-radius:0!important;position:relative;
}
.faq .accordion-button::after{display:none}
.faq .accordion-button::before{
  content:"+";position:absolute;right:24px;top:50%;
  transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-2);
  transition:transform .18s ease,color .18s ease;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:rgba(22,227,180,.04)}
.faq .accordion-button:not(.collapsed)::before{content:"+";transform:translateY(-50%) rotate(45deg);color:var(--brand)}
.faq .accordion-button:hover{color:var(--brand-2)}
.faq .accordion-body{
  padding:0 60px 24px 24px;max-width:720px;
  font-size:15px;line-height:1.85;color:var(--text-2);
}
@media (max-width:767px){
  .faq .accordion-button{padding:16px 52px 16px 18px;font-size:15px}
  .faq .accordion-button::before{right:18px}
  .faq .accordion-body{padding:0 18px 20px 18px}
}

/* CTA */
.cta-band{padding:88px 0}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(7,16,24,.82),rgba(7,16,24,.92)),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  padding:52px;
  box-shadow:var(--sh-2);
}
.cta-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:center;position:relative;z-index:1}
.cta-card h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;color:var(--text-1)}
.cta-card p{font-size:15px;color:var(--text-2);max-width:520px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form .form-control{
  flex:1 1 220px;height:48px;
  background:var(--bg-elev);border:1px solid var(--line);
  border-radius:var(--r-in);color:var(--text-1);padding:0 16px;font-size:15px;
}
.cta-form .form-control::placeholder{color:var(--text-3)}
.cta-form .form-control:focus{
  background:var(--bg-elev);color:var(--text-1);
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,227,180,.18);
}
.cta-tip{font-size:13px;color:var(--text-3);margin-top:14px}
@media (max-width:991px){
  .cta-card{padding:36px 26px}
  .cta-grid{grid-template-columns:1fr;gap:24px}
}

/* footer */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 26px;
  margin-top:0;
}
.foot-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.foot-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:300px;line-height:1.8}
.foot-col h5{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em}
.foot-col a,.foot-col span{
  display:block;font-size:14px;color:var(--text-3);padding:6px 0;
}
.foot-col a:hover{color:var(--brand-2);padding-left:4px}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:var(--text-3);
}
@media (max-width:991px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:575px){
  .foot-grid{grid-template-columns:1fr}
}

/* responsive header */
@media (max-width:991px){
  .header-inner{min-height:60px;gap:12px}
  .brand-mark{font-size:19px}
  .section{padding:64px 0}
  .article-wrap{padding:36px 0 64px}
  .cta-band{padding:64px 0}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .page-head{padding:40px 0 34px}
  .btn-glow,.btn-ghost{min-height:44px;padding:0 20px}
}

/* roulang page: category1 */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --glass:rgba(255,255,255,.045);
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45), 0 10px 30px -10px rgba(22,227,180,.55);
  --r-lg:20px;
  --r-md:16px;
  --r-btn:12px;
  --r-in:10px;
  --nav-h:72px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 480px at 78% -8%, rgba(22,227,180,.10), transparent 62%),
    radial-gradient(700px 420px at 6% 12%, rgba(124,231,255,.07), transparent 66%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--brand-2);text-decoration:none;transition:all .18s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4,h5{color:var(--text-1);font-weight:700;line-height:1.28;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:-.02em;font-weight:700;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;position:relative;z-index:1;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(7,16,24,.86);
  border-bottom:1px solid transparent;
  transition:all .18s ease;
}
.site-header.is-scrolled{
  background:rgba(7,16,24,.78);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.nav-wrap{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  font-size:22px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  color:var(--text-1);
}
.brand-tail{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand);
  border:1px solid rgba(22,227,180,.4);
  border-radius:999px;
  padding:2px 9px;
  line-height:1.5;
  transform:translateY(-2px);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.main-nav .nav-link{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  padding:10px 14px;
  border-radius:10px;
  transition:all .18s ease;
}
.main-nav .nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.main-nav .nav-link:hover{color:var(--text-1);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--text-1);font-weight:600;}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}

.mega-drop{position:relative;}
.mega-toggle{
  background:transparent;
  border:1px solid rgba(124,231,255,.3);
  color:var(--text-1);
  font-size:14px;
  font-weight:500;
  border-radius:999px;
  padding:8px 18px;
  cursor:pointer;
  transition:all .18s ease;
}
.mega-toggle:hover{border-color:var(--brand);background:rgba(22,227,180,.08);}
.mega-menu{
  position:absolute;
  right:0;
  top:calc(100% + 12px);
  width:840px;
  max-width:86vw;
  background:rgba(14,27,38,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2), inset 0 1px 0 rgba(255,255,255,.08);
  padding:24px;
  display:grid;
  grid-template-columns:1fr 1fr 1.15fr;
  gap:24px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .12s ease, transform .12s ease, visibility .12s ease;
  pointer-events:none;
}
.mega-drop:hover .mega-menu,
.mega-drop:focus-within .mega-menu{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
  pointer-events:auto;
}
.mega-title{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text-3);
  margin-bottom:14px;
  font-weight:600;
}
.mega-list a{
  display:block;
  color:var(--text-2);
  font-size:14px;
  padding:9px 10px;
  border-radius:10px;
  transition:all .18s ease;
}
.mega-list a:hover{background:rgba(22,227,180,.08);color:var(--text-1);}
.mega-item{
  display:block;
  padding:10px 10px;
  border-radius:12px;
  border-bottom:1px solid var(--line);
}
.mega-item:last-child{border-bottom:none;}
.mega-item .t{color:var(--text-1);font-size:14px;display:block;margin-bottom:4px;}
.mega-item .d{color:var(--text-3);font-size:12px;}
.mega-item:hover{background:rgba(255,255,255,.04);}
.mega-item:hover .t{color:var(--brand);}
.mega-card{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  background:rgba(255,255,255,.03);
  display:block;
}
.mega-card .thumb{aspect-ratio:16/9;overflow:hidden;}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.mega-card:hover .thumb img{transform:scale(1.05);}
.mega-card .body{padding:14px 16px 16px;}
.mega-card .body span{display:block;color:var(--text-1);font-size:14px;font-weight:600;margin-bottom:4px;}
.mega-card .body em{font-style:normal;color:var(--text-3);font-size:12px;}

.burger{
  width:44px;
  height:44px;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:12px;
  cursor:pointer;
  transition:all .18s ease;
}
.burger span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;}
.burger:hover{border-color:var(--brand);}

/* ============ 抽屉导航 ============ */
.mobile-drawer{
  background:var(--bg-soft);
  border-left:1px solid var(--line);
  width:320px;
  color:var(--text-2);
}
.mobile-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 20px;
}
.drawer-close{
  width:44px;height:44px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--text-1);
  font-size:18px;
  cursor:pointer;
  transition:all .18s ease;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.mobile-drawer .offcanvas-body{padding:18px 20px 28px;}
.m-link{
  display:block;
  padding:14px 12px;
  color:var(--text-2);
  font-size:16px;
  border-radius:12px;
  border-bottom:1px solid var(--line);
}
.m-link.active{color:var(--brand);font-weight:600;background:rgba(22,227,180,.06);}
.m-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.m-sub{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text-3);
  margin:22px 0 8px;
}

/* ============ 按钮 ============ */
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--brand);
  color:#04140F;
  font-weight:600;
  font-size:15px;
  border:none;
  border-radius:var(--r-btn);
  padding:14px 28px;
  min-height:48px;
  box-shadow:var(--sh-glow);
  cursor:pointer;
  transition:all .18s ease;
}
.btn-glow:hover{background:#2ff0c4;color:#04140F;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(22,227,180,.6),0 18px 38px -12px rgba(22,227,180,.7);}
.btn-glow:active{transform:translateY(0);box-shadow:var(--sh-glow);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:transparent;
  color:var(--text-1);
  font-weight:500;
  font-size:15px;
  border:1px solid rgba(124,231,255,.35);
  border-radius:var(--r-btn);
  padding:14px 26px;
  min-height:48px;
  cursor:pointer;
  transition:all .18s ease;
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(22,227,180,.08);color:var(--text-1);}
.btn-ghost:active{transform:translateY(0);background:rgba(22,227,180,.14);}
.btn-sm-nav{padding:10px 20px;min-height:42px;font-size:14px;border-radius:var(--r-btn);}
.btn-pill{border-radius:999px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.soft{background:linear-gradient(180deg,rgba(11,23,33,.65),rgba(7,16,24,0));}
.sec-head{margin-bottom:44px;max-width:820px;}
.sec-tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(22,227,180,.1);
  border:1px solid rgba(22,227,180,.3);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:16px;
}
.sec-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px;}
.sec-head .sub{color:var(--text-2);font-size:15px;max-width:640px;}

.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-2), inset 0 1px 0 rgba(255,255,255,.08);
}
.card-hover{transition:all .18s ease;}
.card-hover:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.4);box-shadow:var(--sh-2),0 0 0 1px rgba(22,227,180,.25),inset 0 1px 0 rgba(255,255,255,.08);}

.badge-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  border-radius:999px;
  padding:3px 11px;
  line-height:1.7;
}
.badge-brand{color:var(--brand-2);background:rgba(124,231,255,.12);border:1px solid rgba(124,231,255,.35);}
.badge-accent{color:var(--accent);background:rgba(255,176,32,.12);border:1px solid rgba(255,176,32,.4);}
.badge-brandsolid{color:#04140F;background:var(--brand);border:1px solid var(--brand);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:24px;
  flex-wrap:wrap;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-2);}
.crumb .sep{color:rgba(124,231,255,.28);}
.crumb .now{color:var(--text-1);}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.22;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,16,24,.72) 0%,rgba(7,16,24,.9) 55%,var(--bg-base) 100%);
  z-index:0;
}
.hero-arc{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:-160px;
  width:1400px;
  height:320px;
  border:1px solid rgba(124,231,255,.12);
  border-radius:50%;
  z-index:1;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,52px);
  margin-bottom:18px;
  letter-spacing:-.01em;
}
.hero-copy .lead{
  font-size:16px;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.trust-bar{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border-top:1px solid var(--line);
  padding-top:18px;
}
.trust-bar span{
  font-size:13px;
  color:var(--text-3);
  padding:0 16px;
  border-left:1px solid var(--line);
}
.trust-bar span:first-child{padding-left:0;border-left:none;}

.hero-side{padding:26px;}
.hero-side .top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:20px;
}
.hero-side .lvl{
  font-size:18px;
  color:var(--text-1);
  font-weight:700;
}
.hero-rows{border-top:1px solid var(--line);}
.hero-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.hero-row span{color:var(--text-2);}
.hero-row b{color:var(--text-1);font-size:16px;}
.hero-row b i{font-style:normal;font-size:12px;color:var(--text-3);margin-left:4px;font-weight:400;}
.progress-wrap{margin-top:20px;}
.progress-label{
  display:flex;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:8px;
}
.progress-label b{color:var(--brand);font-size:15px;}
.progress-bar-track{
  height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.progress-bar-fill{
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}

/* ============ 对比表 ============ */
.table-shell{margin-top:8px;overflow:visible;}
.cmp-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  border-radius:var(--r-lg);
  overflow:hidden;
}
.cmp-table thead th{
  position:sticky;
  top:var(--nav-h);
  z-index:3;
  background:#0d1a24;
  color:var(--text-1);
  font-size:15px;
  font-weight:600;
  text-align:left;
  padding:20px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.cmp-table thead th:first-child{color:var(--text-2);font-weight:500;}
.cmp-table thead th.col-reco{
  background:rgba(22,227,180,.07);
  border-top:2px solid var(--brand);
  color:var(--text-1);
}
.cmp-table thead th.col-reco .badge-tag{margin-left:8px;transform:translateY(-1px);}
.cmp-table tbody td{
  padding:18px 20px;
  min-height:56px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
.cmp-table tbody tr:last-child td{border-bottom:none;}
.cmp-table tbody tr{transition:background .18s ease;}
.cmp-table tbody tr:hover{background:rgba(255,255,255,.035);}
.cmp-table tbody td.cell-label{color:var(--text-1);font-weight:500;}
.cmp-table tbody td.col-reco{background:rgba(22,227,180,.05);}
.cmp-table tbody tr:hover td.col-reco{background:rgba(22,227,180,.08);}
.val{color:var(--text-1);font-weight:700;font-variant-numeric:tabular-nums;}
.mark-yes{color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:8px;}
.mark-yes i{font-size:13px;}
.mark-no{color:var(--danger);font-weight:500;display:inline-flex;align-items:center;gap:8px;}
.mark-no i{font-size:13px;}
.table-note{
  color:var(--text-3);
  font-size:13px;
  margin-top:16px;
  padding-left:2px;
}

/* ============ 适用场景 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.scene-card .thumb{aspect-ratio:16/9;overflow:hidden;position:relative;}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.scene-card:hover .thumb img{transform:scale(1.05);}
.scene-card .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,16,24,.05),rgba(7,16,24,.55));
}
.scene-card .body{padding:24px 26px 26px;}
.scene-card h3{font-size:20px;margin-bottom:10px;}
.scene-card p{font-size:15px;color:var(--text-2);margin-bottom:16px;}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 步骤条 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  position:relative;
  margin-bottom:32px;
}
.step{
  position:relative;
  padding-top:26px;
}
.step::before{
  content:"";
  position:absolute;
  top:8px;
  left:0;
  right:0;
  height:1px;
  background:var(--line);
}
.step::after{
  content:"";
  position:absolute;
  top:4px;
  left:0;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--bg-base);
  border:2px solid var(--line);
}
.step.on::after{border-color:var(--brand);background:var(--brand);box-shadow:0 0 0 4px rgba(22,227,180,.16);}
.step-num{
  font-size:34px;
  color:var(--brand);
  line-height:1;
  margin-bottom:10px;
  display:block;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-2);}
.step-cards{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step-card{
  padding:22px 22px 24px;
  border-radius:var(--r-md);
}
.step-card .st{
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.08em;
  display:block;
  margin-bottom:10px;
}
.step-card p{font-size:14px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:17px;
  font-weight:600;
  padding:22px 52px 22px 0;
  min-height:56px;
  box-shadow:none;
  border-radius:0;
  display:flex;
  align-items:center;
}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:hover{color:var(--brand-2);}
.faq-plus{
  position:absolute;
  right:6px;
  top:50%;
  width:20px;
  height:20px;
  transform:translateY(-50%);
  transition:transform .18s ease;
}
.faq-plus::before,
.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--brand-2);
  border-radius:2px;
}
.faq-plus::before{left:0;right:0;top:9px;height:1.5px;}
.faq-plus::after{top:0;bottom:0;left:9px;width:1.5px;}
.accordion-button:not(.collapsed) .faq-plus{transform:translateY(-50%) rotate(45deg);}
.faq-acc .accordion-body{
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
  max-width:720px;
  padding:0 60px 24px 0;
}

/* ============ CTA ============ */
.cta-shell{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  padding:52px 48px;
  border:1px solid var(--line);
}
.cta-shell::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  opacity:.3;
}
.cta-shell::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(7,16,24,.94),rgba(11,23,33,.86));
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:40px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px;}
.cta-inner .sub{font-size:15px;color:var(--text-2);max-width:460px;}
.cta-form .form-label{
  display:block;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:8px;
}
.input-row{display:flex;gap:12px;flex-wrap:wrap;}
.form-input{
  flex:1 1 220px;
  height:48px;
  background:var(--bg-elev);
  border:1px solid var(--line);
  border-radius:var(--r-in);
  color:var(--text-1);
  font-size:15px;
  padding:0 16px;
  transition:all .18s ease;
}
.form-input::placeholder{color:var(--text-3);}
.form-input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(22,227,180,.18);
}
.form-input.is-error{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,92,122,.16);
}
.form-hint{
  font-size:13px;
  color:var(--text-3);
  margin-top:12px;
}
.form-error{
  font-size:13px;
  color:var(--danger);
  margin-top:8px;
  display:none;
}
.form-error.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 28px;
  margin-top:0;
  position:relative;
  z-index:1;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid var(--line);
}
.foot-brand .brand{margin-bottom:14px;}
.foot-brand p{font-size:14px;color:var(--text-3);max-width:300px;line-height:1.8;}
.foot-col h5{
  font-size:14px;
  color:var(--text-1);
  margin-bottom:16px;
  font-weight:600;
  letter-spacing:.02em;
}
.foot-col a,
.foot-col span{
  display:block;
  font-size:14px;
  color:var(--text-3);
  padding:6px 0;
  line-height:1.7;
}
.foot-col a:hover{color:var(--brand);}
.foot-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{gap:32px;}
  .mega-menu{width:720px;}
}
@media (max-width:991.98px){
  .section{padding:64px 0;}
  .page-hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-copy .lead{max-width:none;}
  .table-shell{margin-top:0;}
  .cmp-table thead th{position:static;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step-cards{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-shell{padding:40px 28px;}
  .faq-acc .accordion-body{padding-right:24px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .nav-wrap{height:60px;}
  .brand{font-size:20px;}
  .trust-bar span{padding:0 12px;font-size:12px;}
  .scene-grid{grid-template-columns:1fr;}

  /* 对比表转卡片流 */
  .cmp-table{border-radius:0;}
  .cmp-table thead{display:none;}
  .cmp-table,
  .cmp-table tbody,
  .cmp-table tr,
  .cmp-table td{display:block;width:100%;}
  .cmp-table tr{
    border:1px solid var(--line);
    border-radius:var(--r-md);
    background:rgba(255,255,255,.03);
    margin-bottom:16px;
    padding:6px 0;
    overflow:hidden;
  }
  .cmp-table tbody tr:hover{background:rgba(255,255,255,.045);}
  .cmp-table tbody td{
    border-bottom:1px dashed rgba(124,231,255,.12);
    padding:12px 18px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    background:transparent !important;
  }
  .cmp-table tbody tr td:last-child{border-bottom:none;}
  .cmp-table tbody td::before{
    content:attr(data-label);
    color:var(--text-3);
    font-size:13px;
    flex:0 0 auto;
  }
  .cmp-table tbody td.cell-label{
    background:rgba(22,227,180,.06) !important;
    font-size:16px;
    border-bottom:1px solid var(--line);
    justify-content:flex-start;
  }
  .cmp-table tbody td.cell-label::before{display:none;}

  .steps{grid-template-columns:1fr;gap:26px;}
  .step::before{display:none;}
  .step-card{padding:20px;}
  .step-cards{grid-template-columns:1fr;}
  .faq-acc .accordion-button{font-size:16px;padding:18px 48px 18px 0;}
  .cta-shell{padding:32px 20px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575.98px){
  .hero-cta{flex-direction:column;align-items:stretch;}
  .btn-glow,.btn-ghost{width:100%;}
  .hero-side{padding:20px;}
  .input-row{flex-direction:column;}
  .input-row .btn-glow{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --line-strong:rgba(124,231,255,.35);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45),0 10px 30px -10px rgba(22,227,180,.55);
  --inset:inset 0 1px 0 rgba(255,255,255,.08);
  --ease:all .18s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-2);text-decoration:none;transition:var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.28;color:var(--text-1)}
p{margin:0;
  color:var(--text-2);}
ul,ol{margin:0;padding:0}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- 玻璃卡 ---------- */
.glass-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--inset),var(--sh-1);
  transition:var(--ease);
}
.glass-card:hover{border-color:rgba(22,227,180,.4);transform:translateY(-4px);box-shadow:var(--inset),var(--sh-2)}

/* ---------- 按钮 ---------- */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--r-sm);
  border:1px solid transparent;cursor:pointer;
  transition:var(--ease);white-space:nowrap;
}
.btn-glow{background:var(--brand);color:#04140F;box-shadow:var(--sh-glow)}
.btn-glow:hover{background:#31F0C3;color:#04140F;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(22,227,180,.55),0 16px 38px -10px rgba(22,227,180,.65)}
.btn-glow:active{transform:translateY(0);box-shadow:var(--sh-glow)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(22,227,180,.08);color:var(--text-1)}
.btn-ghost:active{transform:translateY(1px)}
.btn-glow.small,.btn-ghost.small{padding:11px 20px;font-size:14px}

/* ---------- 徽章与标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:4px 10px;border-radius:999px;
  color:var(--brand-2);
  background:rgba(124,231,255,.12);
  border:1px solid rgba(124,231,255,.35);
}
.badge-accent{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:4px 10px;border-radius:999px;
  color:var(--accent);
  background:rgba(255,176,32,.12);
  border:1px solid rgba(255,176,32,.4);
}
.chip-time{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;
  font-variant-numeric:tabular-nums;
  color:var(--brand-2);
  padding:5px 12px;border-radius:999px;
  background:rgba(124,231,255,.08);
  border:1px solid var(--line);
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,16,24,.84);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;height:72px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:8px;flex-shrink:0}
.brand-mark{font-size:20px;font-weight:700;letter-spacing:.02em;color:var(--text-1)}
.brand-tail{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);
  padding:2px 9px;border-radius:999px;
  background:rgba(22,227,180,.1);border:1px solid rgba(22,227,180,.4);
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.main-nav .nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:9px 12px;border-radius:8px;
  transition:var(--ease);
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.main-nav .nav-link:hover{color:var(--text-1)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link:active{color:var(--brand)}
.main-nav .nav-link.active{color:var(--text-1)}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}

.mega-btn{
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:500;padding:9px 14px;border-radius:var(--r-xs);
  transition:var(--ease);cursor:pointer;
}
.mega-btn:hover,.mega-btn:focus{color:var(--text-1);border-color:var(--line-strong);background:rgba(22,227,180,.06)}
.mega-btn:active{background:rgba(22,227,180,.12)}
.dropdown-menu.mega-panel{
  width:820px;padding:24px;margin-top:12px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(14,27,38,.97);
  backdrop-filter:blur(14px);
  box-shadow:var(--sh-2);
}
@keyframes megaIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.mega-panel.show{animation:megaIn .12s ease forwards}
.mega-grid{display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:24px}
.mega-col h6{font-size:12px;letter-spacing:.08em;font-weight:600;color:var(--brand);margin-bottom:12px}
.mega-col a{
  display:block;font-size:14px;color:var(--text-2);
  padding:7px 0;border-radius:6px;transition:var(--ease);
}
.mega-col a:hover{color:var(--text-1);padding-left:4px}
.mega-post{display:block;padding:8px 0;border-bottom:1px solid rgba(124,231,255,.1)}
.mega-post:last-child{border-bottom:0}
.mp-title{display:block;font-size:14px;color:var(--text-1);line-height:1.5}
.mp-time{display:block;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;margin-top:2px}
.mega-card{
  display:block;border-radius:var(--r-sm);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-elev);
}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:var(--ease)}
.mega-card:hover img{transform:scale(1.04)}
.mega-card span{display:block;padding:10px 12px;font-size:14px;color:var(--text-1)}

.nav-toggle{
  width:44px;height:44px;padding:0 11px;
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-xs);
  transition:var(--ease);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong)}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text-1)}
.mobile-nav{margin-top:4px}
.mobile-panel{
  background:rgba(14,27,38,.98);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:12px;margin-bottom:14px;box-shadow:var(--sh-2);
}
.mobile-panel .m-link{
  display:block;font-size:15px;color:var(--text-2);
  padding:13px 12px;border-radius:var(--r-xs);transition:var(--ease);
}
.mobile-panel .m-link:hover{background:rgba(22,227,180,.08);color:var(--text-1)}
.mobile-panel .m-link.active{color:var(--brand);background:rgba(22,227,180,.1)}

/* ---------- 页面头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 76px;
  background-image:linear-gradient(180deg,rgba(7,16,24,.74),rgba(7,16,24,.95)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;left:50%;bottom:-560px;
  width:1240px;height:1240px;transform:translateX(-50%);
  border:1px solid rgba(124,231,255,.10);border-radius:50%;pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--line);pointer-events:none;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:22px;position:relative;z-index:1}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:rgba(108,132,146,.6)}
.crumb .current{color:var(--text-1)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero-copy h1{
  font-size:clamp(30px,4vw,48px);
  letter-spacing:-.01em;line-height:1.22;
  margin-bottom:18px;
}
.hero-copy h1 em{font-style:normal;color:var(--brand)}
.hero-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.trust-line{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-size:13px;color:var(--text-3)}
.trust-line span{padding:0 12px;border-left:1px solid var(--line)}
.trust-line span:first-child{padding-left:0;border-left:0}

.hero-visual{margin:0;overflow:hidden;padding:0;cursor:default}
.hero-visual:hover{transform:none}
.hv-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hv-cap{padding:20px 22px 22px;border-top:1px solid var(--line)}
.hv-nums{display:flex;align-items:baseline;gap:6px;margin:12px 0 14px}
.hv-nums .score{
  font-size:46px;font-weight:700;letter-spacing:-.03em;line-height:1;
  font-variant-numeric:tabular-nums;color:var(--brand);
}
.hv-nums .unit{font-size:14px;color:var(--text-3)}
.bar-track{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.hv-note{font-size:13px;color:var(--text-3);margin-top:12px;line-height:1.7}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0}
.section.soft{background:var(--bg-soft);border-top:1px solid rgba(124,231,255,.08);border-bottom:1px solid rgba(124,231,255,.08)}
.sec-head{margin-bottom:44px;max-width:760px}
.sec-tag{display:block;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);margin-bottom:10px}
.sec-title{font-size:clamp(24px,3vw,36px);letter-spacing:-.01em;margin-bottom:12px}
.sec-sub{font-size:15px;color:var(--brand-2);opacity:.82;max-width:640px}

/* ---------- 步骤条 ---------- */
.steps-track{
  position:relative;
  display:grid;grid-template-columns:repeat(5,1fr);gap:16px;
  padding:8px 0 0;
}
.steps-track::before{
  content:"";position:absolute;left:10%;right:10%;top:40px;height:1px;background:var(--line);
}
.step-item{text-align:center;position:relative;z-index:1}
.step-num{
  width:64px;height:64px;margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--bg-panel);border:1px solid var(--line);
  font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;letter-spacing:-.02em;
  color:var(--text-3);transition:var(--ease);
}
.step-item.is-active .step-num{
  color:#04140F;background:var(--brand);border-color:var(--brand);box-shadow:var(--sh-glow);
}
.step-item:hover .step-num{border-color:var(--line-strong);color:var(--text-1)}
.step-item.is-active:hover .step-num{color:#04140F}
.step-name{font-size:15px;font-weight:600;color:var(--text-2)}
.step-item.is-active .step-name{color:var(--text-1)}
.step-hint{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;margin-top:2px}

/* ---------- 步骤详情卡 ---------- */
.step-list{display:grid;gap:20px}
.step-card{
  display:grid;grid-template-columns:96px 1fr;gap:26px;
  padding:28px;
  border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--inset),var(--sh-1);
  transition:var(--ease);
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:rgba(22,227,180,.4);
  box-shadow:var(--inset),var(--sh-2);
}
.step-index{display:flex;flex-direction:column;gap:6px}
.big-num{
  font-size:46px;font-weight:700;letter-spacing:-.04em;line-height:1;
  font-variant-numeric:tabular-nums;color:rgba(124,231,255,.34);
}
.step-card:nth-child(1) .big-num{color:var(--brand)}
.step-label{font-size:12px;letter-spacing:.08em;color:var(--text-3)}
.step-body h3{font-size:22px;margin-bottom:10px}
.step-body>p{font-size:15.5px;max-width:720px}
.dot-list{list-style:none;display:grid;gap:8px;margin-top:16px}
.dot-list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);line-height:1.7}
.dot-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.step-foot{margin-top:18px;padding-top:16px;border-top:1px solid rgba(124,231,255,.1)}

/* ---------- 准备清单 ---------- */
.prep-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prep-item{
  padding:24px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--inset),var(--sh-1);transition:var(--ease);
}
.prep-item:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.4);box-shadow:var(--inset),var(--sh-2)}
.prep-num{
  display:block;font-size:13px;font-weight:700;letter-spacing:.08em;
  font-variant-numeric:tabular-nums;color:var(--brand);margin-bottom:12px;
}
.prep-item h4{font-size:17px;margin-bottom:8px}
.prep-item p{font-size:14px;line-height:1.7;color:var(--text-3)}

.prep-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:start}
.prep-aside{margin:0;overflow:hidden;padding:0}
.prep-aside:hover{transform:none}
.prep-aside img{width:100%;aspect-ratio:4/3;object-fit:cover}
.prep-aside figcaption{padding:18px 20px;font-size:14px;color:var(--text-2);line-height:1.7;border-top:1px solid var(--line)}

/* ---------- 时长对照 ---------- */
.duration-table{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  box-shadow:var(--inset),var(--sh-1);
}
.dur-row{
  display:grid;grid-template-columns:1.1fr .8fr 1.4fr;
  gap:16px;padding:20px 26px;align-items:center;
  border-bottom:1px solid rgba(124,231,255,.1);
  transition:var(--ease);
}
.dur-row:last-child{border-bottom:0}
.dur-row:not(.dur-head):hover{background:rgba(22,227,180,.05)}
.dur-head{
  font-size:12px;letter-spacing:.08em;font-weight:600;color:var(--text-3);
  background:rgba(255,255,255,.03);
  position:sticky;top:72px;z-index:2;
}
.dur-row span:first-child{font-size:15.5px;font-weight:600;color:var(--text-1)}
.dur-num{font-variant-numeric:tabular-nums;color:var(--brand);font-weight:600;font-size:15px}
.dur-row span:last-child{font-size:14px;color:var(--text-3)}
.dur-note{font-size:13px;color:var(--text-3);margin-top:16px}

/* ---------- FAQ ---------- */
.acc{--bs-accordion-bg:transparent}
.acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.acc .accordion-item:first-child{border-top:1px solid var(--line)}
.acc .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;
  padding:22px 4px;min-height:56px;
  box-shadow:none;border-radius:0;
  display:flex;align-items:center;gap:16px;
}
.acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.acc .accordion-button:hover{color:var(--brand-2)}
.acc .accordion-button::after{
  content:"+";background-image:none;
  width:auto;height:auto;margin-left:auto;
  font-size:22px;font-weight:400;line-height:1;color:var(--brand);
  transform:none;transition:var(--ease);
}
.acc .accordion-button:not(.collapsed)::after{content:"−";transform:none;color:var(--brand)}
.acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-2);outline-offset:-2px}
.acc .accordion-body{
  padding:0 4px 24px;font-size:15.5px;color:var(--text-2);
  line-height:1.8;max-width:720px;
}
.acc .accordion-collapse{border:0}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  padding:52px;
  background-image:linear-gradient(180deg,rgba(7,16,24,.88),rgba(7,16,24,.95)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--inset),var(--sh-2);
}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;position:relative;z-index:1}
.cta-grid h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-grid p{font-size:15.5px;max-width:520px}
.cta-form{padding:26px;border-radius:var(--r-md);background:rgba(14,27,38,.82);border:1px solid var(--line)}
.field-label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px}
.field-row{display:flex;gap:12px}
.field-input{
  width:100%;height:48px;padding:0 14px;
  background:var(--bg-elev);color:var(--text-1);
  border:1px solid var(--line);border-radius:var(--r-xs);
  font-size:15px;transition:var(--ease);
}
.field-input::placeholder{color:var(--text-3)}
.field-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,227,180,.18)}
.field-hint{font-size:13px;color:var(--text-3);margin-top:12px}
.field-error{display:block;font-size:13px;color:var(--danger);margin-top:8px}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 0;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px}
.foot-col h5{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.foot-col a,.foot-col span{display:block;font-size:14px;color:var(--text-3);padding:6px 0;line-height:1.7}
.foot-col a:hover{color:var(--brand-2)}
.foot-bottom{
  border-top:1px solid rgba(124,231,255,.1);
  padding:20px 0 24px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.foot-bottom span{font-variant-numeric:tabular-nums}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .foot-col:last-child{grid-column:1/-1}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .page-hero{padding:44px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:560px}
  .prep-layout{grid-template-columns:1fr}
  .prep-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .steps-track{grid-template-columns:repeat(5,1fr);gap:8px}
  .step-num{width:52px;height:52px;font-size:20px}
  .steps-track::before{top:34px}
  .dur-head{position:static}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero{padding:32px 0 48px}
  .hero-copy h1{font-size:28px}
  .hero-lead{font-size:16px}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{flex:1 1 auto}
  .step-card{grid-template-columns:1fr;gap:16px;padding:22px}
  .big-num{font-size:38px}
  .steps-track{grid-template-columns:repeat(2,1fr);gap:20px 12px}
  .steps-track::before{display:none}
  .step-num{margin-bottom:10px}
  .prep-grid{grid-template-columns:1fr}
  .dur-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}
  .dur-head{display:none}
  .dur-row span:last-child{font-size:13px}
  .cta-panel{padding:28px 22px}
  .field-row{flex-direction:column}
  .field-row .btn-glow{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:6px}
  .trust-line span{padding:0 10px}
}
@media (max-width:575px){
  .hero-copy h1{font-size:26px}
  .sec-title{font-size:23px}
  .step-card{padding:20px}
  .glass-card{border-radius:var(--r-md)}
}

/* roulang page: category3 */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --line-soft:rgba(124,231,255,.08);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-btn:12px;
  --r-in:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45),0 10px 30px -10px rgba(22,227,180,.55);
  --mono:"DIN Alternate","SFMono-Regular",ui-monospace,"Roboto Mono","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg-base);
  background-image:
    radial-gradient(680px 380px at 88% -6%,rgba(22,227,180,.10),transparent 70%),
    radial-gradient(520px 320px at 4% 12%,rgba(124,231,255,.07),transparent 72%);
  background-repeat:no-repeat;
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:inherit}
a{color:inherit;text-decoration:none;transition:all .18s ease}
a:hover{color:var(--brand-2)}
button{font-family:inherit}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text-1);font-weight:700;line-height:1.28;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:4px}
.container{width:100%;padding-right:16px;padding-left:16px;margin-right:auto;margin-left:auto;max-width:1200px}
@media (min-width:768px){.container{padding-right:24px;padding-left:24px}}
@media (min-width:1400px){.container{max-width:1280px}}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:64px 0}}
@media (min-width:992px){.section{padding:88px 0}}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,16,24,.86);
  border-bottom:1px solid transparent;
  transition:all .18s ease;
}
.site-header.is-stuck{background:rgba(7,16,24,.78);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto}
.brand-mark{color:var(--text-1);font-size:20px;font-weight:700;letter-spacing:.08em}
.brand-tail{
  display:inline-block;padding:3px 10px;border:1px solid var(--line);border-radius:999px;
  color:var(--brand);font-size:12px;letter-spacing:.18em;background:rgba(22,227,180,.08);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav .nav-link{
  position:relative;padding:8px 12px;color:var(--text-2);font-size:15px;font-weight:500;
  border-radius:8px;white-space:nowrap;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease;
}
.main-nav .nav-link:hover{color:var(--text-1)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--text-1)}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text-1);
  transition:all .18s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--text-1);font-size:14px;font-weight:500;padding:8px 14px;
  transition:all .18s ease;
}
.mega-trigger:hover{border-color:var(--brand);color:var(--brand)}
.mega-trigger::after{margin-left:2px}
.mega-panel{
  width:800px;max-width:calc(100vw - 32px);padding:22px;margin-top:14px;
  background:rgba(14,27,38,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-2);
}
.mega-grid{display:grid;grid-template-columns:1fr 1fr 240px;gap:22px}
.mega-col h6{font-size:13px;letter-spacing:.1em;color:var(--brand);margin-bottom:12px;font-weight:600}
.mega-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0;border-radius:6px}
.mega-col a:hover{color:var(--text-1);padding-left:4px}
.mega-item span{display:block;font-size:12px;color:var(--text-3);font-family:var(--mono)}
.mega-card{display:block;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--bg-elev)}
.mega-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.mega-card b{display:block;padding:10px 12px;font-size:13px;font-weight:600;color:var(--text-1)}
.mobile-nav{border-top:1px solid var(--line);background:rgba(11,23,33,.98);padding:12px 0 20px}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:8px 16px;
  color:var(--text-2);font-size:15px;border-bottom:1px solid var(--line-soft);
}
.mobile-nav a.active{color:var(--brand)}

/* 按钮 */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;min-height:48px;border:0;border-radius:var(--r-btn);
  background:var(--brand);color:#04140F;font-size:15px;font-weight:600;
  box-shadow:var(--sh-glow);transition:all .18s ease;
}
.btn-brand:hover{filter:brightness(1.08);transform:translateY(-2px);color:#04140F;box-shadow:0 0 0 1px rgba(22,227,180,.6),0 14px 34px -10px rgba(22,227,180,.65)}
.btn-brand:active{transform:translateY(0)}
.btn-brand.pill{border-radius:999px}
.btn-sm-brand{padding:9px 18px;min-height:40px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;min-height:48px;border-radius:var(--r-btn);
  background:transparent;border:1px solid rgba(124,231,255,.35);color:var(--text-1);
  font-size:15px;font-weight:500;transition:all .18s ease;
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(22,227,180,.08);color:var(--text-1)}
.btn-ghost:active{transform:translateY(1px)}

/* 面包屑 */
.crumb{font-size:14px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--text-1)}

/* 页头 */
.page-head{
  position:relative;overflow:hidden;padding:64px 0 56px;
  background-image:
    linear-gradient(180deg,rgba(7,16,24,.72) 0%,rgba(7,16,24,.94) 62%,var(--bg-base) 100%),
    url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.page-head::after{
  content:"";position:absolute;left:50%;top:-160px;width:760px;height:760px;transform:translateX(-50%);
  border:1px solid rgba(124,231,255,.10);border-radius:50%;pointer-events:none;
}
.page-head .container{position:relative;z-index:2}
.page-head h1{font-size:clamp(30px,4.2vw,52px);margin:18px 0 14px;max-width:16em}
.page-head .lead{max-width:640px;font-size:16px;color:var(--text-2);line-height:1.9}
.head-strip{
  display:flex;flex-wrap:wrap;gap:12px 32px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line);
}
.head-strip div{display:flex;align-items:baseline;gap:8px}
.head-strip b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:26px;color:var(--brand);font-weight:700;line-height:1}
.head-strip span{font-size:13px;color:var(--text-3)}

/* 小节标题 */
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:12px;
  letter-spacing:.16em;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--brand);display:inline-block}
.section-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15px;max-width:640px}

/* 玻璃卡 */
.glass{
  position:relative;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.media-card{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--bg-panel);box-shadow:var(--sh-1);transition:all .18s ease;height:100%;
  display:flex;flex-direction:column;
}
.media-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.5);box-shadow:var(--sh-glow)}
.media-card .thumb{position:relative;overflow:hidden;background:var(--bg-elev)}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease}
.media-card:hover .thumb img{transform:scale(1.04)}
.media-card .body{padding:20px 22px 22px}
.media-card h3{font-size:20px;margin:12px 0 10px;line-height:1.35}
.media-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.ratio-16-9{aspect-ratio:16/9}
.ratio-4-3{aspect-ratio:4/3}
.ratio-16-10{aspect-ratio:16/10}
.big-card .body{padding:26px 28px 28px}
.big-card h3{font-size:clamp(20px,2.2vw,26px)}
.big-card p{font-size:15px}
.score-row{
  display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:20px;padding-top:18px;
  border-top:1px dashed var(--line);
}
.score-row div{display:flex;align-items:baseline;gap:8px}
.score-row b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:24px;color:var(--text-1);font-weight:700;line-height:1}
.score-row span{font-size:12px;color:var(--text-3)}

/* 标签 / 徽章 */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.06em;border:1px solid transparent;
}
.tag-brand{color:var(--brand-2);background:rgba(124,231,255,.10);border-color:rgba(124,231,255,.32)}
.tag-accent{color:var(--accent);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.34)}
.tag-line{color:var(--text-2);background:rgba(255,255,255,.04);border-color:var(--line)}

/* 竖列小卡 */
.side-stack{display:flex;flex-direction:column;gap:20px;height:100%}
.side-card{
  display:flex;flex-direction:column;gap:14px;flex:1;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg-panel);
  padding:18px;transition:all .18s ease;
}
.side-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.5);box-shadow:var(--sh-glow)}
.side-card .thumb{border-radius:12px;overflow:hidden;background:var(--bg-elev)}
.side-card .thumb img{width:100%;height:100%;object-fit:cover}
.side-card h3{font-size:17px;line-height:1.4}
.side-card p{font-size:13px;color:var(--text-3);line-height:1.7}

/* 三列常规卡 */
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.grid-3{grid-template-columns:repeat(3,1fr)}}

/* 列表区 */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.filter-row{display:flex;flex-wrap:wrap;gap:10px}
.filter-row a{
  padding:7px 16px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--text-2);
  transition:all .18s ease;
}
.filter-row a:hover,.filter-row a.on{border-color:var(--brand);color:var(--brand);background:rgba(22,227,180,.08)}
.more-link{font-size:14px;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px}
.more-link:hover{color:var(--brand)}
.wide-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:992px){.wide-grid{grid-template-columns:repeat(2,1fr)}}
.wide-card{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;transition:all .18s ease;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.wide-card:hover{transform:translateY(-4px);border-color:rgba(22,227,180,.5);box-shadow:var(--sh-glow)}
.wide-card a{display:flex;gap:16px;padding:16px;align-items:stretch}
.wide-thumb{flex:0 0 148px;max-width:148px;border-radius:12px;overflow:hidden;background:var(--bg-elev)}
.wide-thumb img{width:100%;height:100%;object-fit:cover}
.wide-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}
.wide-body h3{font-size:16px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.wide-body p{font-size:13px;color:var(--text-3);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-time{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:12px;color:var(--text-3)}

/* 分栏说明 */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media (min-width:992px){.split{grid-template-columns:5fr 6fr;gap:48px}}
.split-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-elev)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.point-list{margin-top:24px;display:flex;flex-direction:column;gap:16px}
.point-list li{
  display:flex;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r-md);
  background:rgba(255,255,255,.03);transition:all .18s ease;
}
.point-list li:hover{border-color:rgba(22,227,180,.4);transform:translateY(-4px)}
.point-list i{color:var(--brand);font-size:18px;line-height:1.6}
.point-list b{display:block;color:var(--text-1);font-size:15px;margin-bottom:4px}
.point-list span{font-size:14px;color:var(--text-3);line-height:1.75}

/* FAQ */
.faq-wrap{max-width:880px}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent!important;color:var(--text-1)!important;font-size:16px;font-weight:600;
  padding:20px 44px 20px 0;min-height:56px;box-shadow:none!important;border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--brand)!important}
.accordion-button::after{display:none}
.faq-ico{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-2);font-size:15px;transition:transform .18s ease;
}
.accordion-button:not(.collapsed) .faq-ico{transform:translateY(-50%) rotate(45deg);color:var(--brand)}
.accordion-body{padding:0 0 22px;color:var(--text-2);font-size:15px;line-height:1.8;max-width:720px}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:44px 28px;text-align:center;
  background-image:linear-gradient(180deg,rgba(7,16,24,.86),rgba(7,16,24,.94)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  box-shadow:var(--sh-2);
}
.cta-block h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-block p{font-size:15px;color:var(--text-2);max-width:520px;margin:0 auto}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px}
.cta-note{margin-top:16px;font-size:13px;color:var(--text-3)}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);margin-top:80px;padding-top:56px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.foot-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr}}
.foot-brand p{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px}
.foot-col h5{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.06em}
.foot-col a,.foot-col span{display:block;font-size:14px;color:var(--text-3);padding:5px 0}
.foot-col a:hover{color:var(--brand-2)}
.foot-bottom{
  margin-top:44px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.pt-0{padding-top:0!important}
@media (max-width:991.98px){
  .header-inner{height:60px}
  .brand-mark{font-size:18px}
  .cta-block{padding:32px 18px}
  .page-head{padding:44px 0 40px}
}
@media (max-width:575.98px){
  .wide-card a{flex-direction:column}
  .wide-thumb{flex:none;max-width:100%;aspect-ratio:16/9}
  .head-strip{gap:10px 22px}
  .head-strip b{font-size:22px}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%}
}

/* roulang page: category4 */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45),0 10px 30px -10px rgba(22,227,180,.55);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:var(--brand-2);text-decoration:none;transition:all .18s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.28;letter-spacing:-.01em}
p{margin:0 0 16px}
ul{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.num,.group-no{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{width:100%;max-width:1200px;padding:0 24px;margin:0 auto}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:575.98px){.container{padding:0 16px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,16,24,.86);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;
}
.brand{display:inline-flex;align-items:center;gap:8px;flex-shrink:0}
.brand-mark{font-size:21px;font-weight:700;color:var(--text-1);letter-spacing:.06em}
.brand-tail{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:#04140F;
  background:var(--brand);border-radius:999px;padding:2px 9px;line-height:1.5;
}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav .nav-link{
  position:relative;display:inline-block;
  padding:6px 2px;color:var(--text-2);font-size:15px;font-weight:500;line-height:1.6;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.main-nav .nav-link:hover,.main-nav .nav-link:focus-visible{color:var(--text-1)}
.main-nav .nav-link:hover::after,.main-nav .nav-link:focus-visible::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--text-1)}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:12px;flex-shrink:0}

.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  height:38px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:500;
  transition:all .18s ease;cursor:pointer;
}
.mega-trigger:hover{color:var(--text-1);border-color:rgba(124,231,255,.4);background:rgba(124,231,255,.06)}
.mega-trigger i{font-size:11px;color:var(--brand-2)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:800px;
  display:grid;grid-template-columns:1.05fr 1fr .95fr;gap:24px;
  padding:24px;border-radius:var(--r-md);
  background:rgba(14,27,38,.97);
  border:1px solid var(--line);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .12s ease,transform .12s ease,visibility .12s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h6{
  margin:0 0 14px;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand-2);
}
.mega-links{list-style:none}
.mega-links li{margin-bottom:10px}
.mega-links a{color:var(--text-2);font-size:14.5px}
.mega-links a:hover{color:var(--brand-2)}
.mega-post{display:block;padding:10px 0;border-bottom:1px dashed rgba(124,231,255,.14);color:var(--text-2);font-size:14.5px}
.mega-post:last-child{border-bottom:0}
.mega-post:hover{color:var(--text-1)}
.mega-post .t{display:block;line-height:1.5}
.mega-post .d{display:block;font-size:12.5px;color:var(--text-3);margin-top:2px}
.mega-card{
  display:block;border-radius:14px;overflow:hidden;border:1px solid var(--line);
  background:rgba(255,255,255,.04);transition:all .18s ease;
}
.mega-card:hover{border-color:rgba(22,227,180,.45);transform:translateY(-3px)}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.mega-card .cap{padding:12px 14px}
.mega-card .cap strong{display:block;font-size:14.5px;color:var(--text-1);font-weight:600}
.mega-card .cap span{font-size:12.5px;color:var(--text-3)}

.nav-toggle{
  width:44px;height:44px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
  transition:all .18s ease;
}
.nav-toggle:hover{border-color:rgba(22,227,180,.5);color:var(--brand)}
.mobile-nav{
  display:flex;flex-direction:column;gap:2px;
  padding:14px 0 20px;border-top:1px solid var(--line);
}
.mobile-nav a{
  padding:12px 4px;color:var(--text-2);font-size:15.5px;font-weight:500;
  border-bottom:1px solid rgba(124,231,255,.08);
}
.mobile-nav a.active{color:var(--brand)}
.mobile-nav .mobile-cta{
  margin-top:16px;border:0;border-radius:var(--r-sm);color:#04140F;font-weight:600;
  text-align:center;background:var(--brand);box-shadow:var(--sh-glow);
}

.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 26px;border:0;border-radius:var(--r-sm);
  background:var(--brand);color:#04140F;font-size:15px;font-weight:600;line-height:1.4;
  box-shadow:var(--sh-glow);transition:all .18s ease;cursor:pointer;
}
.btn-glow:hover{color:#04140F;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(22,227,180,.55),0 16px 36px -12px rgba(22,227,180,.7)}
.btn-glow:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 26px;border-radius:var(--r-sm);
  background:transparent;border:1px solid rgba(124,231,255,.35);color:var(--text-1);
  font-size:15px;font-weight:600;line-height:1.4;transition:all .18s ease;cursor:pointer;
}
.btn-ghost:hover{color:var(--text-1);border-color:var(--brand);background:rgba(22,227,180,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}

/* ---------- page head ---------- */
.page-head{
  position:relative;overflow:hidden;padding:52px 0 64px;
  background:var(--bg-soft);border-bottom:1px solid var(--line);
}
.page-head .bg-img{position:absolute;inset:0;background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;opacity:.24}
.page-head .bg-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,16,24,.5) 0%,rgba(7,16,24,.86) 58%,var(--bg-base) 100%)}
.page-head .arc{
  position:absolute;left:50%;bottom:-260px;width:1040px;height:460px;transform:translateX(-50%);
  border:1px solid rgba(124,231,255,.10);border-radius:50%;pointer-events:none;
}
.page-head .base-line{position:absolute;left:0;right:0;bottom:78px;height:1px;background:rgba(124,231,255,.08);pointer-events:none}
.page-head .container{position:relative;z-index:2}

.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:rgba(124,231,255,.28)}
.crumb .current{color:var(--text-1)}

.page-head h1{font-size:clamp(30px,4.2vw,50px);margin-bottom:16px}
.page-head .sub{max-width:680px;color:var(--text-2);font-size:16.5px;line-height:1.8;margin-bottom:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;padding:6px 13px;border-radius:999px;
  color:var(--brand-2);background:rgba(124,231,255,.12);border:1px solid rgba(124,231,255,.3);
}
.tag.accent{color:var(--accent);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.4)}

/* ---------- shared ---------- */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--brand);margin-bottom:12px}
.section-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
.glass{
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-1);
  transition:all .18s ease;
}
.glass.hoverable:hover{border-color:rgba(22,227,180,.42);transform:translateY(-4px);box-shadow:0 0 0 1px rgba(22,227,180,.28),var(--sh-2)}

/* ---------- quick cards ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.quick-card{padding:24px;border-radius:var(--r-md)}
.quick-card .qno{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:rgba(22,227,180,.12);border:1px solid rgba(22,227,180,.34);color:var(--brand);font-size:13px;font-weight:600;margin-bottom:14px}
.quick-card h3{font-size:17.5px;margin-bottom:8px}
.quick-card p{color:var(--text-2);font-size:14.5px;line-height:1.75;margin:0}
.quick-card .val{color:var(--brand);font-weight:600;font-variant-numeric:tabular-nums}

/* ---------- doc layout ---------- */
.doc-section{padding:88px 0}
.doc-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start}
.doc-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px}
.doc-nav-card{padding:20px;border-radius:var(--r-md)}
.doc-nav-title{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand-2);margin-bottom:14px}
.doc-nav{list-style:none}
.doc-nav a{
  display:block;padding:9px 12px;font-size:14.5px;color:var(--text-2);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
}
.doc-nav a:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.doc-nav a.active{color:var(--brand);border-left-color:var(--brand);background:rgba(22,227,180,.08)}
.side-note{padding:20px;border-radius:var(--r-md)}
.side-note h4{font-size:15px;margin-bottom:10px;color:var(--text-1)}
.side-note p{font-size:13.5px;color:var(--text-2);margin:0 0 12px;line-height:1.75}
.side-note .meta{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}

.doc-body{max-width:820px}
.doc-group{padding-bottom:12px;margin-bottom:48px;scroll-margin-top:110px}
.doc-group:last-of-type{margin-bottom:0}
.group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.group-no{font-size:26px;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1}
.doc-group h2{font-size:clamp(22px,2.6vw,30px)}
.doc-group .lead-p{color:var(--text-2);font-size:16px;margin-bottom:22px}
.rule-card{padding:22px 24px;border-radius:var(--r-md);margin-bottom:16px}
.rule-card h3{font-size:18px;margin-bottom:8px}
.rule-card p{color:var(--text-2);font-size:15px;margin:0;line-height:1.85}
.rule-list{list-style:none;margin:6px 0 22px}
.rule-list li{
  position:relative;padding-left:22px;margin-bottom:12px;
  color:var(--text-2);font-size:15.5px;line-height:1.8;
}
.rule-list li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 3px rgba(22,227,180,.12);
}
.rule-list li strong{color:var(--text-1);font-weight:600}
.doc-figure{margin:26px 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--bg-panel)}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.doc-figure figcaption{padding:11px 16px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line)}
.inline-note{
  padding:16px 18px;border-radius:var(--r-sm);margin:6px 0 22px;
  border-left:3px solid var(--brand);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:14.8px;
}

/* ---------- compare table ---------- */
.table-card{padding:8px;border-radius:var(--r-lg);overflow:hidden}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px}
.cmp-table thead th{
  position:sticky;top:0;z-index:2;
  padding:16px 18px;text-align:left;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-2);background:rgba(11,23,33,.96);border-bottom:1px solid var(--line);
}
.cmp-table tbody td{
  padding:17px 18px;color:var(--text-2);border-bottom:1px solid rgba(124,231,255,.08);vertical-align:middle;
}
.cmp-table tbody tr{transition:background .18s ease}
.cmp-table tbody tr:hover{background:rgba(124,231,255,.05)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table td:first-child{color:var(--text-1);font-weight:600}
.cmp-table .num{color:var(--text-1);font-weight:600}
.table-note{margin:14px 4px 6px;font-size:13px;color:var(--text-3)}

/* ---------- faq ---------- */
.faq{border-radius:var(--r-md);overflow:hidden;background:rgba(255,255,255,.035);border:1px solid var(--line)}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq .accordion-item:last-child{border-bottom:0}
.faq .accordion-button{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:60px;padding:16px 22px;background:transparent;color:var(--text-1);
  font-size:16px;font-weight:600;line-height:1.5;box-shadow:none;border:0;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:rgba(22,227,180,.05)}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-2);outline-offset:-3px}
.faq .accordion-button::after{
  content:"+";background-image:none;transform:none;
  width:24px;height:24px;display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform .18s ease,color .18s ease;flex-shrink:0;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq .accordion-body{
  padding:0 22px 20px;max-width:720px;color:var(--text-2);font-size:15px;line-height:1.85;
}

/* ---------- cta ---------- */
.cta-band{padding:0 0 88px}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);padding:48px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;
}
.cta-card .bg-img{position:absolute;inset:0;background:url("/assets/images/backpic/back-3.webp") center/cover no-repeat;opacity:.4}
.cta-card .bg-mask{position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,16,24,.94) 0%,rgba(11,23,33,.86) 100%)}
.cta-copy,.cta-form{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-copy p{color:var(--text-2);font-size:15.5px;max-width:460px;margin-bottom:26px}
.cta-form{padding:24px;border-radius:var(--r-md);background:rgba(255,255,255,.05);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:7px}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-xs);
  background:var(--bg-elev);border:1px solid var(--line);color:var(--text-1);font-size:15px;
  transition:all .18s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,227,180,.18)}
.field.err input{border-color:var(--danger)}
.field .errmsg{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.err .errmsg{display:block}
.form-note{margin:12px 0 0;font-size:13px;color:var(--text-3);text-align:center}

/* ---------- footer ---------- */
.site-footer{margin-top:0;padding:56px 0 24px;background:var(--bg-soft);border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.foot-brand p{color:var(--text-2);font-size:14.5px;max-width:300px;margin:16px 0 0}
.foot-col h5{font-size:13px;letter-spacing:.12em;color:var(--brand-2);font-weight:600;margin-bottom:16px}
.foot-col a,.foot-col span{display:block;color:var(--text-2);font-size:14.5px;padding:5px 0}
.foot-col a:hover{color:var(--brand)}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .main-nav{gap:16px}
  .main-nav .nav-link{font-size:14.5px}
  .mega-panel{width:700px}
}
@media (max-width:991.98px){
  .header-inner{height:60px}
  .section{padding:64px 0}
  .doc-section{padding:64px 0}
  .quick-grid{grid-template-columns:1fr 1fr}
  .doc-layout{grid-template-columns:1fr;gap:28px}
  .doc-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .doc-aside > *{flex:1 1 280px}
  .doc-nav{display:grid;grid-template-columns:1fr 1fr;gap:4px}
  .doc-body{max-width:100%}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:36px 28px}
  .cta-band{padding-bottom:64px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .doc-section{padding:56px 0}
  .page-head{padding:36px 0 52px}
  .page-head .sub{font-size:15.5px}
  .quick-grid{grid-template-columns:1fr}
  .table-card{padding:0;background:transparent;border:0;box-shadow:none;backdrop-filter:none}
  .cmp-table{display:block}
  .cmp-table thead{display:none}
  .cmp-table tbody{display:block}
  .cmp-table tbody tr{
    display:block;margin-bottom:14px;padding:16px 18px;border-radius:var(--r-md);
    background:rgba(255,255,255,.045);border:1px solid var(--line);
  }
  .cmp-table tbody td{
    display:flex;justify-content:space-between;gap:16px;padding:7px 0;border:0;font-size:14.5px;
  }
  .cmp-table tbody td::before{
    content:attr(data-label);color:var(--text-3);font-size:13px;flex-shrink:0;
  }
  .cmp-table tbody td:first-child{border-bottom:1px dashed rgba(124,231,255,.16);padding-bottom:10px;margin-bottom:6px}
  .cmp-table tbody td:first-child::before{display:none}
  .table-note{margin-top:12px}
  .faq .accordion-button{min-height:56px;font-size:15.5px;padding:14px 18px}
  .faq .accordion-body{padding:0 18px 18px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (max-width:575.98px){
  .doc-nav{grid-template-columns:1fr}
  .doc-aside > *{flex:1 1 100%}
  .group-head{gap:10px}
  .group-no{font-size:22px}
  .rule-card{padding:18px}
  .cta-card{padding:28px 18px}
  .cta-form{padding:18px}
  .btn-glow,.btn-ghost{width:100%}
  .hero-actions{display:flex;flex-direction:column;gap:12px}
}

/* roulang page: category5 */
:root{
  --bg-base:#071018;
  --bg-soft:#0B1721;
  --bg-panel:#0E1B26;
  --bg-elev:#12232F;
  --brand:#16E3B4;
  --brand-2:#7CE7FF;
  --accent:#FFB020;
  --danger:#FF5C7A;
  --text-1:#EAF4F8;
  --text-2:#9FB6C2;
  --text-3:#6C8492;
  --line:rgba(124,231,255,.16);
  --line-soft:rgba(124,231,255,.09);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:10px;
  --sh-1:0 2px 8px rgba(0,0,0,.28);
  --sh-2:0 12px 32px -12px rgba(0,0,0,.55);
  --sh-glow:0 0 0 1px rgba(22,227,180,.45), 0 10px 30px -10px rgba(22,227,180,.55);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:
    radial-gradient(1100px 560px at 88% -8%, rgba(22,227,180,.07), transparent 62%),
    radial-gradient(820px 460px at 4% 2%, rgba(124,231,255,.05), transparent 58%),
    var(--bg-base);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:repeating-linear-gradient(0deg, rgba(124,231,255,.026) 0 1px, transparent 1px 5px);
}
img{max-width:100%;display:block}
a{text-decoration:none;color:var(--brand-2);transition:all .18s ease}
a:hover{color:var(--brand)}
button,input{font-family:inherit}
h1,h2,h3,h4,h5{color:var(--text-1);font-weight:600;line-height:1.28;margin:0}
p{margin:0}
.container{max-width:1200px;padding-left:16px;padding-right:16px;position:relative;z-index:1}
@media (min-width:1400px){.container{max-width:1280px}}
::selection{background:rgba(22,227,180,.28);color:#EAF4F8}
a:focus-visible,button:focus-visible,input:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--brand-2);
  outline-offset:2px;
}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,16,24,.78);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:2px;
  font-size:20px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text-1);
  flex-shrink:0;
}
.brand:hover{color:var(--text-1)}
.brand-mark{color:var(--text-1)}
.brand-tail{
  color:var(--brand);
  border:1px solid rgba(22,227,180,.35);
  background:rgba(22,227,180,.1);
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  padding:1px 8px;
  margin-left:4px;
  letter-spacing:.06em;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
}
.main-nav .nav-link{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  padding:22px 12px;
  white-space:nowrap;
}
.main-nav .nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:14px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:scaleX(0);
  transition:transform .18s ease;
}
.main-nav .nav-link:hover{color:var(--text-1)}
.main-nav .nav-link:hover::after{transform:scaleX(1)}
.main-nav .nav-link.active{color:var(--text-1);font-weight:600}
.main-nav .nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* Mega 面板 */
.mega-wrap{position:relative}
.mega-trigger{
  background:transparent;
  border:1px solid var(--line);
  color:var(--text-2);
  border-radius:999px;
  padding:7px 16px;
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:all .18s ease;
}
.mega-trigger:hover,.mega-wrap:focus-within .mega-trigger{
  color:var(--text-1);
  border-color:rgba(22,227,180,.45);
  background:rgba(22,227,180,.08);
}
.mega-panel{
  position:absolute;
  top:calc(100% + 16px);
  right:0;
  width:840px;
  background:rgba(13,25,35,.94);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh-2);
  padding:24px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .12s ease, transform .12s ease, visibility .12s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.mega-grid{display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:22px}
.mega-col h6{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand);
  margin:0 0 12px;
  font-weight:600;
}
.mega-col a{
  display:block;
  color:var(--text-2);
  font-size:14px;
  padding:7px 0;
  border-bottom:1px dashed var(--line-soft);
}
.mega-col a:hover{color:var(--text-1);padding-left:4px}
.mega-col .mega-meta{font-size:12px;color:var(--text-3);display:block;margin-top:2px}
.mega-item{padding:8px 0;border-bottom:1px dashed var(--line-soft)}
.mega-item:last-child{border-bottom:0}
.mega-item strong{display:block;color:var(--text-1);font-size:14px;font-weight:600;line-height:1.5}
.mega-item span{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.mega-card{
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  background:var(--bg-panel);
}
.mega-card .mega-thumb{aspect-ratio:16/9;overflow:hidden}
.mega-card .mega-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.mega-card:hover .mega-thumb img{transform:scale(1.05)}
.mega-card .mega-body{padding:14px 16px 16px}
.mega-card .mega-body strong{color:var(--text-1);font-size:15px;display:block;font-weight:600;line-height:1.5}
.mega-card .mega-body span{font-size:13px;color:var(--text-3)}

.nav-toggle{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:all .18s ease;
}
.nav-toggle:hover{border-color:rgba(22,227,180,.45);background:rgba(22,227,180,.08)}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(11,23,33,.98);
  padding:12px 16px 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:block;
  color:var(--text-2);
  padding:14px 4px;
  font-size:15px;
  border-bottom:1px solid var(--line-soft);
  min-height:44px;
}
.mobile-panel a:hover,.mobile-panel a.active{color:var(--brand)}
.mobile-panel .mobile-cta{margin-top:16px;display:inline-flex}

/* ============ 通用元件 ============ */
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--brand);
  color:#04140F;
  font-weight:600;
  font-size:15px;
  padding:13px 26px;
  min-height:44px;
  border:1px solid transparent;
  border-radius:12px;
  box-shadow:var(--sh-glow);
  cursor:pointer;
  transition:all .18s ease;
}
.btn-glow:hover{
  color:#04140F;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(22,227,180,.5), 0 14px 36px -10px rgba(22,227,180,.72);
}
.btn-glow:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:transparent;
  color:var(--text-1);
  font-weight:500;
  font-size:15px;
  padding:13px 26px;
  min-height:44px;
  border:1px solid rgba(124,231,255,.35);
  border-radius:12px;
  transition:all .18s ease;
  cursor:pointer;
}
.btn-ghost:hover{
  color:var(--text-1);
  border-color:var(--brand);
  background:rgba(22,227,180,.08);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}

.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand);
  border:1px solid rgba(22,227,180,.3);
  background:rgba(22,227,180,.08);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:16px;
  font-weight:600;
}
.section{padding:88px 0;position:relative}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px}
.section-head .sub{color:var(--text-3);font-size:15px}

.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), var(--sh-2);
  transition:all .18s ease;
}
.glass-ornate::after{
  content:"";
  position:absolute;
  inset:7px;
  border:1px solid var(--line-soft);
  border-radius:14px;
  pointer-events:none;
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:56px 0 60px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(7,16,24,.78) 0%, rgba(7,16,24,.93) 62%, var(--bg-base) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.breadcrumb-line{
  font-size:14px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:22px;
}
.breadcrumb-line a{color:var(--text-3)}
.breadcrumb-line a:hover{color:var(--brand-2)}
.breadcrumb-line .sep{color:rgba(124,231,255,.3)}
.breadcrumb-line .current{color:var(--text-1)}
.page-hero h1{
  font-size:clamp(28px,3.8vw,44px);
  margin-bottom:18px;
  letter-spacing:-.01em;
}
.page-hero .lead{
  max-width:780px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.9;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  border-radius:999px;
  padding:5px 14px;
}
.chip i{color:var(--brand-2);font-size:12px}

/* ============ 数据卡 ============ */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{padding:26px 24px;border-radius:var(--r-md)}
.stat-card:hover{border-color:rgba(22,227,180,.4);transform:translateY(-4px)}
.stat-card .stat-label{
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.04em;
  margin-bottom:14px;
  display:block;
}
.stat-card .stat-num{
  font-size:clamp(30px,3.6vw,42px);
  font-weight:700;
  color:var(--text-1);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  line-height:1.1;
  display:flex;
  align-items:baseline;
  gap:4px;
}
.stat-card .stat-num em{
  font-style:normal;
  font-size:16px;
  font-weight:600;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.stat-card .stat-foot{
  margin-top:14px;
  padding-top:12px;
  border-top:1px dashed var(--line-soft);
  font-size:13px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:6px;
}
.stat-card .stat-foot .up{color:var(--brand)}
.stat-card .stat-foot .amber{color:var(--accent)}

/* ============ 分布条 ============ */
.dist-card{padding:30px 28px;border-radius:var(--r-lg)}
.dist-row{margin-bottom:24px}
.dist-row:last-child{margin-bottom:0}
.dist-top{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  margin-bottom:10px;
}
.dist-top .name{font-size:15px;color:var(--text-1);font-weight:500}
.dist-top .val{
  font-size:18px;
  font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.meter{
  height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}
.meter i{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transition:width .5s ease;
}
.dist-note{
  margin-top:8px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.hint-card{padding:28px 26px;border-radius:var(--r-lg);height:100%}
.hint-card h3{font-size:19px;margin-bottom:16px}
.hint-list{list-style:none;padding:0;margin:0}
.hint-list li{
  position:relative;
  padding-left:18px;
  margin-bottom:14px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
}
.hint-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
}
.hint-list li:last-child{margin-bottom:0}
.hint-list strong{color:var(--text-1);font-weight:600}

/* ============ 口径卡 ============ */
.rule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rule-card{
  padding:26px 24px;
  border-radius:var(--r-md);
}
.rule-card:hover{border-color:rgba(22,227,180,.4);transform:translateY(-4px)}
.rule-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  background:rgba(22,227,180,.1);
  border:1px solid rgba(22,227,180,.28);
  font-size:16px;
  margin-bottom:18px;
}
.rule-card h3{font-size:18px;margin-bottom:10px}
.rule-card p{font-size:14.5px;line-height:1.8}

/* ============ 内容卡 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), var(--sh-1);
  transition:all .18s ease;
  display:flex;
  flex-direction:column;
  height:100%;
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:rgba(22,227,180,.4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08), var(--sh-2);
}
.post-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-elev);
  border-bottom:1px solid var(--line);
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(7,16,24,.12), rgba(7,16,24,.42));
}
.post-tag{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  font-size:12px;
  font-weight:600;
  color:var(--brand-2);
  background:rgba(7,16,24,.72);
  border:1px solid rgba(124,231,255,.32);
  border-radius:999px;
  padding:3px 11px;
  letter-spacing:.04em;
}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-body h3{font-size:17px;line-height:1.55;margin-bottom:10px}
.post-body h3 a{color:var(--text-1)}
.post-body h3 a:hover{color:var(--brand)}
.post-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:16px}
.post-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px dashed var(--line-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}
.post-foot time{font-variant-numeric:tabular-nums}
.post-foot .go{color:var(--brand-2);font-size:13px}
.post-card:hover .post-foot .go{color:var(--brand)}

/* ============ 表格 ============ */
.table-card{border-radius:var(--r-lg);overflow:hidden}
.table-card .table-wrap{padding:8px 8px 0}
.data-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
}
.data-table thead th{
  position:sticky;
  top:0;
  background:rgba(14,27,38,.96);
  backdrop-filter:blur(8px);
  color:var(--text-3);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  text-align:left;
  white-space:nowrap;
}
.data-table tbody td{
  padding:18px 20px;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
  height:56px;
}
.data-table tbody tr{transition:background .18s ease}
.data-table tbody tr:hover{background:rgba(124,231,255,.05)}
.data-table tbody td:first-child{color:var(--text-1);font-weight:500}
.data-table .num{
  font-variant-numeric:tabular-nums;
  font-weight:600;
  color:var(--text-1);
}
.data-table .mark-yes{color:var(--accent);font-weight:600}
.data-table .mark-no{color:var(--danger);font-weight:600}
.table-note{
  padding:16px 20px 20px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:22px 48px 22px 4px;
  min-height:56px;
  box-shadow:none !important;
  border-radius:0 !important;
  transition:all .18s ease;
}
.faq-acc .accordion-button:hover{color:var(--brand-2)}
.faq-acc .accordion-button:not(.collapsed){
  background:rgba(22,227,180,.05);
  color:var(--brand);
}
.faq-acc .accordion-button::after{
  content:"+";
  background-image:none !important;
  width:26px;
  height:26px;
  font-size:20px;
  line-height:1;
  color:var(--brand-2);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-left:auto;
  transform:none;
  transition:transform .18s ease, color .18s ease;
  position:absolute;
  right:8px;
  top:50%;
  margin-top:-13px;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--brand);
}
.faq-acc .accordion-body{
  padding:0 60px 24px 4px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  max-width:720px;
}
.faq-acc .accordion-body a{color:var(--brand-2)}

/* ============ CTA ============ */
.cta-card{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  padding:52px 48px;
  background-image:
    linear-gradient(180deg, rgba(7,16,24,.9), rgba(7,16,24,.94)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-2);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:44px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(23px,2.6vw,32px);margin-bottom:14px}
.cta-inner p{font-size:15px;line-height:1.85;max-width:520px}
.cta-note{margin-top:14px;font-size:13px;color:var(--text-3)}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.field-label{
  display:block;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field-input{
  width:100%;
  height:48px;
  background:var(--bg-elev);
  border:1px solid var(--line);
  border-radius:var(--r-xs);
  color:var(--text-1);
  font-size:15px;
  padding:0 16px;
  transition:all .18s ease;
}
.field-input::placeholder{color:var(--text-3)}
.field-input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(22,227,180,.18);
}
.field-input.is-error{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,92,122,.14);
}
.field-error{
  display:none;
  margin-top:8px;
  font-size:13px;
  color:var(--danger);
}
.field-error.show{display:block}
.form-tip{
  margin-top:12px;
  font-size:13px;
  color:var(--brand);
  min-height:20px;
}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(9,19,27,.9);
  padding:64px 0 0;
  margin-top:0;
  position:relative;
  z-index:1;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.foot-brand .brand{font-size:19px;margin-bottom:14px}
.foot-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:300px}
.foot-col h5{
  font-size:14px;
  color:var(--text-1);
  margin-bottom:16px;
  letter-spacing:.04em;
  font-weight:600;
}
.foot-col a,.foot-col span{
  display:block;
  font-size:14px;
  color:var(--text-3);
  padding:6px 0;
  line-height:1.7;
}
.foot-col a:hover{color:var(--brand-2);padding-left:4px}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .mega-panel{width:720px}
  .main-nav .nav-link{padding:22px 9px;font-size:14.5px}
}
@media (max-width:991px){
  .header-inner{height:60px}
  .section{padding:64px 0}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .rule-grid{grid-template-columns:1fr;gap:16px}
  .post-grid{grid-template-columns:1fr 1fr;gap:18px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-card{padding:36px 26px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .page-hero{padding:40px 0 44px}
  .faq-acc .accordion-body{padding-right:20px}
}
@media (max-width:767px){
  .data-table thead{display:none}
  .data-table,.data-table tbody,.data-table tr,.data-table td{display:block;width:100%}
  .data-table tbody tr{
    border:1px solid var(--line-soft);
    border-radius:var(--r-sm);
    margin:0 0 12px;
    padding:6px 14px;
    background:rgba(255,255,255,.02);
  }
  .data-table tbody td{
    border-bottom:1px dashed var(--line-soft);
    padding:10px 0;
    height:auto;
    display:flex;
    justify-content:space-between;
    gap:14px;
  }
  .data-table tbody td:last-child{border-bottom:0}
  .data-table tbody td::before{
    content:attr(data-label);
    color:var(--text-3);
    font-size:13px;
    font-weight:500;
  }
  .post-grid{grid-template-columns:1fr}
  .dist-card{padding:24px 20px}
}
@media (max-width:575px){
  .section{padding:56px 0}
  .stat-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:26px}
  .cta-card{padding:28px 20px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px;text-align:center}
  .btn-glow,.btn-ghost{width:100%}
  .section-head{margin-bottom:32px}
}